Pub Date : 2023-11-10DOI: 10.1142/s0217732323501523
Muhammad Adeel, M. Zeeshan Gul, Shamaila Rani, Abdul Jawad
The main objective of this study is to investigate the stability and viability of anisotropic compact stellar objects using the Krori–Burua solutions in [Formula: see text] gravity, where [Formula: see text] is a nonmetricity scalar that explains the gravitational effects. We use a static spherical metric in the inner region and Schwarzschild spacetime in the outer region of the Her X-I, SAX J 1808.4-3658 and 4U1820-30 compact stars to investigate their physical properties. By using observed values of the radius and mass of the considered compact stars, the unknown parameters are determined. We use a particular model of this theory to examine the behavior of energy density, pressure components, anisotropy, equation of state parameters and energy constraints in the interior of the proposed stellar objects. The Tolman–Oppenheimer–Volkoff equation is used to analyze the equilibrium state of these stars and causality condition, Herrera cracking method, adiabatic index methods are used to determine their stability. It is found that revolutionary technique sheds new light on the development of observationally accurate gravity model.
本研究的主要目的是研究各向异性致密恒星物体的稳定性和生存能力，使用[公式:见文本]引力中的Krori-Burua解，其中[公式:见文本]是一个解释引力效应的非度量标量。我们在Her x - 1、SAX J 1808.4-3658和4U1820-30致密恒星的内部区域和外部区域使用静态球度规和史瓦西时空来研究它们的物理性质。利用所考虑的致密恒星的半径和质量的观测值，确定了未知参数。我们使用该理论的一个特定模型来检查所提出的恒星物体内部的能量密度、压力分量、各向异性、状态方程参数和能量约束的行为。用Tolman-Oppenheimer-Volkoff方程分析了这些恒星的平衡状态和因果关系条件，用Herrera裂解法、绝热指数法确定了它们的稳定性。这一革命性的技术为建立精确观测的重力模型提供了新的思路。
{"title":"Physical analysis of anisotropic compact stars in f(𝒬) gravity","authors":"Muhammad Adeel, M. Zeeshan Gul, Shamaila Rani, Abdul Jawad","doi":"10.1142/s0217732323501523","DOIUrl":"https://doi.org/10.1142/s0217732323501523","url":null,"abstract":"The main objective of this study is to investigate the stability and viability of anisotropic compact stellar objects using the Krori–Burua solutions in [Formula: see text] gravity, where [Formula: see text] is a nonmetricity scalar that explains the gravitational effects. We use a static spherical metric in the inner region and Schwarzschild spacetime in the outer region of the Her X-I, SAX J 1808.4-3658 and 4U1820-30 compact stars to investigate their physical properties. By using observed values of the radius and mass of the considered compact stars, the unknown parameters are determined. We use a particular model of this theory to examine the behavior of energy density, pressure components, anisotropy, equation of state parameters and energy constraints in the interior of the proposed stellar objects. The Tolman–Oppenheimer–Volkoff equation is used to analyze the equilibrium state of these stars and causality condition, Herrera cracking method, adiabatic index methods are used to determine their stability. It is found that revolutionary technique sheds new light on the development of observationally accurate gravity model.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":" 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135190961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-10DOI: 10.1142/s0217732323501493
Bikram Keshari Parida, Abhijit Sen, Shailesh Dhasmana, Zurab K. Silagadze
The Koopman–von Neumann (KvN) mechanics is an approach that was formulated long ago to answer the question regarding the existence of a Hilbert space representation of classical mechanics. KvN mechanics is a non-relativistic theory, and it is not clear how spin can be included in it, since spin is widely regarded as a relativistic property. Cabrera et al., in Eur. Phys. J. Spec. Top. 227, 2195 (2019) argued that the Spohn equation [Spohn, Ann. Phys. 282, 420 (2000)] is the correct classical framework for the Koopman–von Neumann theory corresponding to the Dirac equation. However, after Lévy-Leblond’s seminal work on this topic, it became clear that spin naturally arises also from the Galilean invariant wave equations, without any need of relativistic considerations. Inspired by this, we propose another possibility of including spin in the KvN formalism: the Lévy-Leblond equation in the Koopman–von Neumann formalism can be obtained as a null reduction of the massless Dirac equation in the Eisenhart–Duval lift metric. To illustrate the idea, we implement it for a one-dimensional classical system without magnetic interactions.
{"title":"Lévy-Leblond equation and Eisenhart–Duval lift in Koopman–von Neumann mechanics","authors":"Bikram Keshari Parida, Abhijit Sen, Shailesh Dhasmana, Zurab K. Silagadze","doi":"10.1142/s0217732323501493","DOIUrl":"https://doi.org/10.1142/s0217732323501493","url":null,"abstract":"The Koopman–von Neumann (KvN) mechanics is an approach that was formulated long ago to answer the question regarding the existence of a Hilbert space representation of classical mechanics. KvN mechanics is a non-relativistic theory, and it is not clear how spin can be included in it, since spin is widely regarded as a relativistic property. Cabrera et al., in Eur. Phys. J. Spec. Top. 227, 2195 (2019) argued that the Spohn equation [Spohn, Ann. Phys. 282, 420 (2000)] is the correct classical framework for the Koopman–von Neumann theory corresponding to the Dirac equation. However, after Lévy-Leblond’s seminal work on this topic, it became clear that spin naturally arises also from the Galilean invariant wave equations, without any need of relativistic considerations. Inspired by this, we propose another possibility of including spin in the KvN formalism: the Lévy-Leblond equation in the Koopman–von Neumann formalism can be obtained as a null reduction of the massless Dirac equation in the Eisenhart–Duval lift metric. To illustrate the idea, we implement it for a one-dimensional classical system without magnetic interactions.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":" 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135191919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-08DOI: 10.1142/s0217732323501547
Y. Lahlou, B. Maroufi, M. Daoud
Quantum correlations beyond quantum entanglement represent vital resources in quantum information processing as well as in quantum computation. In fact, both quantum entanglement and quantum correlation are the same when the quantum system is described by pure states. However, this is not exactly the case when general mixed states are considered. In order to clarify this, a simple model has been proposed for the production and quantification of these quantum correlations between two mechanical resonators that are macroscopic in two Fabry–Pérot cavities optomechanical coupled by the photon hopping process. In this model, we analyze and investigate the quantification of the quantum correlation beyond the entanglement between the mechanical modes. We determine the global covariance matrix of the model from which we derive the expression of the entropy of formation ([Formula: see text]) as well as the Gaussian quantum discord ([Formula: see text]), which quantify the amount of quantum entanglement and quantum correlations, respectively. The analysis based on these two quantum correlations quantifiers shows that quantum discord is more appropriate to characterize the quantum correlations between the mechanical modes in an optomechanical quantum system in the presence of robust photon hopping.
{"title":"Quantifying quantum correlations beyond entanglement via robust photon hopping in an optomechanical system","authors":"Y. Lahlou, B. Maroufi, M. Daoud","doi":"10.1142/s0217732323501547","DOIUrl":"https://doi.org/10.1142/s0217732323501547","url":null,"abstract":"Quantum correlations beyond quantum entanglement represent vital resources in quantum information processing as well as in quantum computation. In fact, both quantum entanglement and quantum correlation are the same when the quantum system is described by pure states. However, this is not exactly the case when general mixed states are considered. In order to clarify this, a simple model has been proposed for the production and quantification of these quantum correlations between two mechanical resonators that are macroscopic in two Fabry–Pérot cavities optomechanical coupled by the photon hopping process. In this model, we analyze and investigate the quantification of the quantum correlation beyond the entanglement between the mechanical modes. We determine the global covariance matrix of the model from which we derive the expression of the entropy of formation ([Formula: see text]) as well as the Gaussian quantum discord ([Formula: see text]), which quantify the amount of quantum entanglement and quantum correlations, respectively. The analysis based on these two quantum correlations quantifiers shows that quantum discord is more appropriate to characterize the quantum correlations between the mechanical modes in an optomechanical quantum system in the presence of robust photon hopping.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"4 15","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135391514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-08DOI: 10.1142/s0217732323501468
V. J. Dagwal, D. D. Pawar, Y. S. Solanke
We have presented the Big Rip singularity in [Formula: see text] gravity with tilt congruences and creation field. We have solved the field equations by considering a conformally flat universe and the condition [Formula: see text], where [Formula: see text] is a constant. The solutions of the field equations have also been investigated by using the method of [J. V. Narlikar and T. Padmanabhan, Phys. Rev. D 32, 1928 (1985)] in which the creation field [Formula: see text] is a function of time [Formula: see text]. Some geometric aspects of the model are also discussed by using MATLAB.
我们在[公式:见文]中给出了具有倾斜同余和创造场的重力的大撕裂奇点。我们通过考虑共形平坦宇宙和条件(公式:见文)来求解场方程，其中[公式:见文]是一个常数。用[J]的方法研究了场方程的解。V. Narlikar和T. Padmanabhan，物理学家Rev. D 32, 1928(1985)]，其中创造场[公式:见文]是时间的函数[公式:见文]。利用MATLAB对该模型的一些几何方面进行了讨论。
{"title":"Big Rip singularity in f(R,T) gravity with tilted observers","authors":"V. J. Dagwal, D. D. Pawar, Y. S. Solanke","doi":"10.1142/s0217732323501468","DOIUrl":"https://doi.org/10.1142/s0217732323501468","url":null,"abstract":"We have presented the Big Rip singularity in [Formula: see text] gravity with tilt congruences and creation field. We have solved the field equations by considering a conformally flat universe and the condition [Formula: see text], where [Formula: see text] is a constant. The solutions of the field equations have also been investigated by using the method of [J. V. Narlikar and T. Padmanabhan, Phys. Rev. D 32, 1928 (1985)] in which the creation field [Formula: see text] is a function of time [Formula: see text]. Some geometric aspects of the model are also discussed by using MATLAB.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"16 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135391724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-08DOI: 10.1142/s0217732323501171
Yan-Feng Lang
Lots of ready quantum private comparison (QPC) protocols usually only judge whether two users’ data are equal, whereas the quantum private magnitude comparison (QPMC) protocol can compare the magnitude of two numbers, whose results are greater than, equal and less than. It is by announcing a comparison result of two bits in two data that the existent QPMC protocols determine the size relationships of the whole data. Although the announcement leaks no information to outside attackers, yet it alerts two participants to know each other’s value of a certain bit. This is termed as bit leakage in this paper. In order to remedy this shortage, the paper proposes a novel QPMC protocol using a type of Bell state. The protocol is thoroughly analyzed, correct and secure. Also, it proves free of bit leakage. Additionally, because it is easier to implement because of the usage of a type of Bell state, it counts as a better alternative for QPMC.
{"title":"Bit leakage-resistant quantum private magnitude comparison","authors":"Yan-Feng Lang","doi":"10.1142/s0217732323501171","DOIUrl":"https://doi.org/10.1142/s0217732323501171","url":null,"abstract":"Lots of ready quantum private comparison (QPC) protocols usually only judge whether two users’ data are equal, whereas the quantum private magnitude comparison (QPMC) protocol can compare the magnitude of two numbers, whose results are greater than, equal and less than. It is by announcing a comparison result of two bits in two data that the existent QPMC protocols determine the size relationships of the whole data. Although the announcement leaks no information to outside attackers, yet it alerts two participants to know each other’s value of a certain bit. This is termed as bit leakage in this paper. In order to remedy this shortage, the paper proposes a novel QPMC protocol using a type of Bell state. The protocol is thoroughly analyzed, correct and secure. Also, it proves free of bit leakage. Additionally, because it is easier to implement because of the usage of a type of Bell state, it counts as a better alternative for QPMC.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"4 18","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135391511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-04DOI: 10.1142/s0217732323750020
Jonathan Bougie, Asim Gangopadhyaya, Constantin Rasinariu
We comment on the paper ``Numerical study of the SWKB condition of novel classes of exactly solvable systems'' [Y. Nasuda and N. Sawado, Mod. Phys. Lett. A 36, 2150025 (2021)]. We show that it misrepresents our prior work [J. Bougie, A. Gangopadhyaya and C. Rasinariu, J. Phys. A: Math. Theor. 51, 375202 (2018)], and clarify this misunderstanding.
本文对“一类新的精确可解系统的SWKB条件的数值研究”一文作了评论。Nasuda和N. Sawado, Mod物理学。列托人。[j].农业工程学报，2016,32(5):391 - 391。我们证明它歪曲了我们之前的工作[J]。Bougie, A. Gangopadhyaya和C. Rasinariu, J.物理学。答:数学。理论，51,375202(2018)]，并澄清这一误解。
{"title":"Comments on “Numerical study of the SWKB condition of novel classes of exactly solvable systems”","authors":"Jonathan Bougie, Asim Gangopadhyaya, Constantin Rasinariu","doi":"10.1142/s0217732323750020","DOIUrl":"https://doi.org/10.1142/s0217732323750020","url":null,"abstract":"We comment on the paper ``Numerical study of the SWKB condition of novel classes of exactly solvable systems'' [Y. Nasuda and N. Sawado, Mod. Phys. Lett. A 36, 2150025 (2021)]. We show that it misrepresents our prior work [J. Bougie, A. Gangopadhyaya and C. Rasinariu, J. Phys. A: Math. Theor. 51, 375202 (2018)], and clarify this misunderstanding.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"52 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135775864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-04DOI: 10.1142/s0217732323750032
D. Batic, M. Nowakowski, S. A. Salim
In this work, we join the controversial discussion on singular and nonsingular black holes using the Gaussian distribution. Our result which uses correct boundary conditions shifts the debate in favor of regular black holes at the center. The present findings add new insights into the ongoing discussions surrounding singularities in black hole solutions of the Einstein equations.
{"title":"A comment on singular and nonsingular black holes using the Gaussian distribution","authors":"D. Batic, M. Nowakowski, S. A. Salim","doi":"10.1142/s0217732323750032","DOIUrl":"https://doi.org/10.1142/s0217732323750032","url":null,"abstract":"In this work, we join the controversial discussion on singular and nonsingular black holes using the Gaussian distribution. Our result which uses correct boundary conditions shifts the debate in favor of regular black holes at the center. The present findings add new insights into the ongoing discussions surrounding singularities in black hole solutions of the Einstein equations.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"52 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135775862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-04DOI: 10.1142/s0217732323501511
F. M. Aldosari, A.-B. A. Mohamed, A. Rahman, M. Hashem
In this paper, we explore distribution dynamics of two-qubit Fisher and skew information correlations of a dissipative microwave cavity field interacting with two charged superconducting qubits. Besides the negativity function, non-classical correlations beyond entanglement are studied using local quantum Fisher information (LQFI) and local quantum uncertainty (LQU). We find that the two-qubit non-classical correlations are sensitive to qubit–qubit distribution angle, two-qubit dissipation parameter, and initial coherent state intensity. The phenomena of frozen quantum correlations, sudden death or birth, as well as revival dynamical maps are feasible in the current two-qubit state when exposed to a microwave cavity. The non-classical correlations and entanglement have been found damped under the two-qubit dissipation appearance in the field. For the increasing strength of coherence intensity of the field, the two-qubit non-classical correlations functions remain to emerge quickly and oscillate with higher frequency, although with the least amplitudes. Interestingly, unlike the non-classical correlations, negativity does not emerge against higher coherence strengths of the cavity and remains completely zero. Finally, for the least dissipation and higher coherence strength, one can readily generate non-classical two-qubit states employing a microwave cavity.
{"title":"Distribution dynamics of fisher and Wigner–Yanase information correlations of two qubits coupled to an open superconducting cavity","authors":"F. M. Aldosari, A.-B. A. Mohamed, A. Rahman, M. Hashem","doi":"10.1142/s0217732323501511","DOIUrl":"https://doi.org/10.1142/s0217732323501511","url":null,"abstract":"In this paper, we explore distribution dynamics of two-qubit Fisher and skew information correlations of a dissipative microwave cavity field interacting with two charged superconducting qubits. Besides the negativity function, non-classical correlations beyond entanglement are studied using local quantum Fisher information (LQFI) and local quantum uncertainty (LQU). We find that the two-qubit non-classical correlations are sensitive to qubit–qubit distribution angle, two-qubit dissipation parameter, and initial coherent state intensity. The phenomena of frozen quantum correlations, sudden death or birth, as well as revival dynamical maps are feasible in the current two-qubit state when exposed to a microwave cavity. The non-classical correlations and entanglement have been found damped under the two-qubit dissipation appearance in the field. For the increasing strength of coherence intensity of the field, the two-qubit non-classical correlations functions remain to emerge quickly and oscillate with higher frequency, although with the least amplitudes. Interestingly, unlike the non-classical correlations, negativity does not emerge against higher coherence strengths of the cavity and remains completely zero. Finally, for the least dissipation and higher coherence strength, one can readily generate non-classical two-qubit states employing a microwave cavity.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"52 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135775861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-31DOI: 10.1142/s021773232350147x
L. Reddi Rani, N. Sowmya, H. C. Manjunatha, M. M. Armstrong Arasu
As a function of the barrier height, center-of-mass energy, Coulomb interaction parameter and [Formula: see text], a new empirical formula for the astronomical [Formula: see text]-factor has been proposed. Around 14 fusion reactions using [Formula: see text]Ti as projectiles were taken into consideration for various targets, producing compound nuclei with atomic and mass number ranges of [Formula: see text] and [Formula: see text], respectively. The geometric factor, Gamow–Sommerfield factor and empirical [Formula: see text]-factor formulas have been used to determine the fusion cross-sections. Compared to Wong’s formula, this study shows a better agreement with the available experiments except for the [Formula: see text] and [Formula: see text] fusion reactions. When employed to correlate with the experimental data on titanium-induced fusion reactions, this study yields a lower standard deviation value than Wong’s formula except for the fusion reactions leading to the formation of compound nuclei [Formula: see text]Hf and [Formula: see text]Th.
{"title":"Investigations on the Ti-induced fusion cross-sections in the range 44≤Z≤104","authors":"L. Reddi Rani, N. Sowmya, H. C. Manjunatha, M. M. Armstrong Arasu","doi":"10.1142/s021773232350147x","DOIUrl":"https://doi.org/10.1142/s021773232350147x","url":null,"abstract":"As a function of the barrier height, center-of-mass energy, Coulomb interaction parameter and [Formula: see text], a new empirical formula for the astronomical [Formula: see text]-factor has been proposed. Around 14 fusion reactions using [Formula: see text]Ti as projectiles were taken into consideration for various targets, producing compound nuclei with atomic and mass number ranges of [Formula: see text] and [Formula: see text], respectively. The geometric factor, Gamow–Sommerfield factor and empirical [Formula: see text]-factor formulas have been used to determine the fusion cross-sections. Compared to Wong’s formula, this study shows a better agreement with the available experiments except for the [Formula: see text] and [Formula: see text] fusion reactions. When employed to correlate with the experimental data on titanium-induced fusion reactions, this study yields a lower standard deviation value than Wong’s formula except for the fusion reactions leading to the formation of compound nuclei [Formula: see text]Hf and [Formula: see text]Th.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135870999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-31DOI: 10.1142/s0217732323501481
Zain Ul Abidin, Uzma Tabassam, Muhammad Ali
Doubly differential transverse momentum spectra of strange mesons [Formula: see text] and [Formula: see text] within rapidity interval of [Formula: see text] are studied by using Monte Carlo event generators in pp, pPb and PbPb collisions at different center-of-mass energies. The predictions of simulations are compared to the ALICE data. The fitting of doubly differential transverse momentum spectra of ALICE data is performed by using Tsallis distribution function. To check the quality of the fitting, chemical potential is also set to zero value. The extracted values of the non-extensive parameter ([Formula: see text]), a chemical potential [Formula: see text] and effective Tsallis temperature [Formula: see text] for different particle species have been obtained from the thermodynamically consistent Tsallis distribution function. It is observed that the effective Tsallis temperature increases at different center-of-mass energies. The predictions of the MC event generators, i.e. PYTHIA8 CR and HIJING 2.0 are compared to the ALICE data, deviations are observed which may be due to the reshuffling of parton colors and string fragmentation.
{"title":"Determination of Tsallis parameters for K∗(892)± mesons in inelastic pp, pPb and PbPb collisions","authors":"Zain Ul Abidin, Uzma Tabassam, Muhammad Ali","doi":"10.1142/s0217732323501481","DOIUrl":"https://doi.org/10.1142/s0217732323501481","url":null,"abstract":"Doubly differential transverse momentum spectra of strange mesons [Formula: see text] and [Formula: see text] within rapidity interval of [Formula: see text] are studied by using Monte Carlo event generators in pp, pPb and PbPb collisions at different center-of-mass energies. The predictions of simulations are compared to the ALICE data. The fitting of doubly differential transverse momentum spectra of ALICE data is performed by using Tsallis distribution function. To check the quality of the fitting, chemical potential is also set to zero value. The extracted values of the non-extensive parameter ([Formula: see text]), a chemical potential [Formula: see text] and effective Tsallis temperature [Formula: see text] for different particle species have been obtained from the thermodynamically consistent Tsallis distribution function. It is observed that the effective Tsallis temperature increases at different center-of-mass energies. The predictions of the MC event generators, i.e. PYTHIA8 CR and HIJING 2.0 are compared to the ALICE data, deviations are observed which may be due to the reshuffling of parton colors and string fragmentation.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"42 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135814046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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