Pub Date : 2024-03-25DOI: 10.1209/0295-5075/ad3777
Chaitra Chooda Chalavadi, V. Venkatesha
The aim of this manuscript is to study traversable wormhole geometries in the non-metricity and matter coupling gravity. We investigate the Morris-Thorne wormhole metric within the framework of extended symmetric teleparallel gravity. With an anisotropic matter distribution, we explore two distinct wormhole models under two different scenarios. First, we consider the equations of state, and then we assume specific shape functions for each scenario. In both cases, the shape function satisfies all fundamental criteria for a traversable wormhole. We present our results through graphical representations and analyze the energy conditions. Furthermore, we examine the behavior of the wormhole through the anisotropic parameter. Finally, we present our conclusions based on the obtained results.
{"title":"Some aspects of Morris-Thorne wormhole in f(Q,T) gravity","authors":"Chaitra Chooda Chalavadi, V. Venkatesha","doi":"10.1209/0295-5075/ad3777","DOIUrl":"https://doi.org/10.1209/0295-5075/ad3777","url":null,"abstract":"\u0000 The aim of this manuscript is to study traversable wormhole geometries in the non-metricity and matter coupling gravity. We investigate the Morris-Thorne wormhole metric within the framework of extended symmetric teleparallel gravity. With an anisotropic matter distribution, we explore two distinct wormhole models under two different scenarios. First, we consider the equations of state, and then we assume specific shape functions for each scenario. In both cases, the shape function satisfies all fundamental criteria for a traversable wormhole. We present our results through graphical representations and analyze the energy conditions. Furthermore, we examine the behavior of the wormhole through the anisotropic parameter. Finally, we present our conclusions based on the obtained results.","PeriodicalId":503117,"journal":{"name":"Europhysics Letters","volume":" 40","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140383622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-19DOI: 10.1209/0295-5075/ad3574
Dun Han, Xiang Li
Conventional models of decision-making are predicated upon the notion of rational deliberation. However, empirical evidence has increasingly highlighted the pervasive role of bounded rationality in shaping decisional outcomes. The manifestation of bounded rationality is evident through a spectrum of cognitive biases and heuristics, including but not limited to anchoring, availability, the decoy effect, herd behavior, and the nuanced dynamics of reward and punishment, as well as the implications of weighting and framing effects. This prospective study is dedicated to a comprehensive exploration of such multiple factors together with their impacts to the architecture and functionality of decision-making processes, and their further research potentials as well.
{"title":"Multifactorial effects on bounded rational decision-making","authors":"Dun Han, Xiang Li","doi":"10.1209/0295-5075/ad3574","DOIUrl":"https://doi.org/10.1209/0295-5075/ad3574","url":null,"abstract":"\u0000 Conventional models of decision-making are predicated upon the notion of rational deliberation. However, empirical evidence has increasingly highlighted the pervasive role of bounded rationality in shaping decisional outcomes. The manifestation of bounded rationality is evident through a spectrum of cognitive biases and heuristics, including but not limited to anchoring, availability, the decoy effect, herd behavior, and the nuanced dynamics of reward and punishment, as well as the implications of weighting and framing effects. This prospective study is dedicated to a comprehensive exploration of such multiple factors together with their impacts to the architecture and functionality of decision-making processes, and their further research potentials as well.","PeriodicalId":503117,"journal":{"name":"Europhysics Letters","volume":"16 3‐4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140228393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-19DOI: 10.1209/0295-5075/ad3575
Abdul Jalal, Muhammad Qasim, U. Qureshi, Bin Hu
This article explores the design and analysis of a metal-graphene hybrid metamaterial structure tailored for tunable circular dichroism (CD) effects in the terahertz (THz) frequency regime. Chiral metamaterials have garnered considerable interest in photonics due to their versatile applications, including sensing, polarization manipulation, and chiral imaging. The proposed metamaterial unit cell features four meta-atoms with C4 rotational symmetry, composed of gold on a polyimide substrate. By strategically integrating the graphene sheets above the gold patterns, selective control over the absorption efficiency for the incident wave of left-handed circularly polarized (LCP) and right-handed circularly polarized (RCP) light is achieved. The study demonstrates that adjusting graphene chemical potential enables precise modulation of CD from 0.80 to 0.10 across a wide THz frequency spectrum. Furthermore, the article investigates the structure optical response for incident angles ranging up to 750, revealing stable CD behavior up to 300 and intriguing dual-band effects beyond 500. These findings underscore the potential of the proposed metamaterial for practical applications in photonics, sensing, and chiral imaging, offering tunable control over the CD effects in the THz regime.
本文探讨了一种金属-石墨烯混合超材料结构的设计和分析，该结构专为太赫兹（THz）频率范围内的可调圆二色性（CD）效应而量身定制。手性超材料具有传感、偏振操作和手性成像等多种应用，因此在光子学领域引起了广泛关注。所提出的超材料单元具有四个具有 C4 旋转对称性的元原子，由聚酰亚胺基底上的金组成。通过有策略地将石墨烯片集成到金图案上方，实现了对左旋圆偏振光（LCP）和右旋圆偏振光（RCP）入射波吸收效率的选择性控制。研究表明，调整石墨烯化学势可在宽太赫兹频谱范围内将 CD 值从 0.80 精确调制到 0.10。此外，文章还研究了入射角高达 750 的结构光学响应，揭示了高达 300 的稳定 CD 行为和超过 500 的引人入胜的双波段效应。这些发现强调了所提出的超材料在光子学、传感和手性成像等实际应用中的潜力，为太赫兹机制中的CD效应提供了可调控制。
{"title":"Controlled circular dichroism with graphene-based metamaterial for terahertz wave","authors":"Abdul Jalal, Muhammad Qasim, U. Qureshi, Bin Hu","doi":"10.1209/0295-5075/ad3575","DOIUrl":"https://doi.org/10.1209/0295-5075/ad3575","url":null,"abstract":"\u0000 This article explores the design and analysis of a metal-graphene hybrid metamaterial structure tailored for tunable circular dichroism (CD) effects in the terahertz (THz) frequency regime. Chiral metamaterials have garnered considerable interest in photonics due to their versatile applications, including sensing, polarization manipulation, and chiral imaging. The proposed metamaterial unit cell features four meta-atoms with C4 rotational symmetry, composed of gold on a polyimide substrate. By strategically integrating the graphene sheets above the gold patterns, selective control over the absorption efficiency for the incident wave of left-handed circularly polarized (LCP) and right-handed circularly polarized (RCP) light is achieved. The study demonstrates that adjusting graphene chemical potential enables precise modulation of CD from 0.80 to 0.10 across a wide THz frequency spectrum. Furthermore, the article investigates the structure optical response for incident angles ranging up to 750, revealing stable CD behavior up to 300 and intriguing dual-band effects beyond 500. These findings underscore the potential of the proposed metamaterial for practical applications in photonics, sensing, and chiral imaging, offering tunable control over the CD effects in the THz regime.","PeriodicalId":503117,"journal":{"name":"Europhysics Letters","volume":"59 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140230558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper examines the impact of nonlinear coupling on the synchronization of interconnected oscillators. Various powers of diffusive coupling are explored to introduce nonlinear effects, and the results are contrasted with those of linear diffusive coupling. The study employs three representative chaoic systems—namely, the Lorenz, R¨ossler, and Hindmarsh-Rose systems. Findings indicate that nonlinear couplings with power below one result in synchronization at lower coupling strengths. Additionally, the critical coupling strength reduces as the coupling power decreases. However, the synchronization region undergoes changes and becomes bounded. Conversely, for powers exceeding one, networks are either unable to synchronize or require higher coupling strengths compared to linear coupling.
{"title":"The effect of nonlinear diffusive coupling on the synchronization of coupled oscillators","authors":"Negar Massihi, Fatemeh Parastesh, Farzad Towhidkhah, Huihai Wang, Shaobo He, S. Jafari","doi":"10.1209/0295-5075/ad33e7","DOIUrl":"https://doi.org/10.1209/0295-5075/ad33e7","url":null,"abstract":"\u0000 This paper examines the impact of nonlinear coupling on the synchronization of interconnected oscillators. Various powers of diffusive coupling are explored to introduce nonlinear effects, and the results are contrasted with those of linear diffusive coupling. The study employs three representative chaoic systems—namely, the Lorenz, R¨ossler, and Hindmarsh-Rose systems. Findings indicate that nonlinear couplings with power below one result in synchronization at lower coupling strengths. Additionally, the critical coupling strength reduces as the coupling power decreases. However, the synchronization region undergoes changes and becomes bounded. Conversely, for powers exceeding one, networks are either unable to synchronize or require higher coupling strengths compared to linear coupling.","PeriodicalId":503117,"journal":{"name":"Europhysics Letters","volume":"8 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140243393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-14DOI: 10.1209/0295-5075/ad33e6
Andrea Auconi
The invariant response was defined from a formulation of the fluctuation-response theorem in the space of probability distributions. An inequality which sets the mutual information as a limiting factor to the invariant response is here derived in the small noise limit based on Stam’s isoperimetric inequality. Beyond the small noise limit, numerical violations exclude its general validity, however a strong distribution bias is observed. Applications to the thermodynamics of feedback control and to estimation theory are discussed.
{"title":"Information-response inequality in the small noise limit","authors":"Andrea Auconi","doi":"10.1209/0295-5075/ad33e6","DOIUrl":"https://doi.org/10.1209/0295-5075/ad33e6","url":null,"abstract":"\u0000 The invariant response was defined from a formulation of the fluctuation-response theorem in the space of probability distributions. An inequality which sets the mutual information as a limiting factor to the invariant response is here derived in the small noise limit based on Stam’s isoperimetric inequality. Beyond the small noise limit, numerical violations exclude its general validity, however a strong distribution bias is observed. Applications to the thermodynamics of feedback control and to estimation theory are discussed.","PeriodicalId":503117,"journal":{"name":"Europhysics Letters","volume":"84 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140242359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-13DOI: 10.1209/0295-5075/ad3362
Min Liu, Qiang Guo, Jianguo Liu
Network resilience measures complex systems ability to adjust its activity to retain the basic functionality for systematic errors or failures, which has attracted increasingly attentions from various fields. Resilience analyses play an important role for early warning, prediction, and proposing potential strategies or designing optimal resilience systems. This Letter reviews the advanced progress of network resilience from three aspects: Resilience measurement, resilience analysis, as well as resilience recovery strategies. We outline the challenges of network resilience which should be investigated in the future.
{"title":"Advanced progress of network resilience","authors":"Min Liu, Qiang Guo, Jianguo Liu","doi":"10.1209/0295-5075/ad3362","DOIUrl":"https://doi.org/10.1209/0295-5075/ad3362","url":null,"abstract":"\u0000 Network resilience measures complex systems ability to adjust its activity to retain the basic functionality for systematic errors or failures, which has attracted increasingly attentions from various fields. Resilience analyses play an important role for early warning, prediction, and proposing potential strategies or designing optimal resilience systems. This Letter reviews the advanced progress of network resilience from three aspects: Resilience measurement, resilience analysis, as well as resilience recovery strategies. We outline the challenges of network resilience which should be investigated in the future.","PeriodicalId":503117,"journal":{"name":"Europhysics Letters","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140245321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-11DOI: 10.1209/0295-5075/ad329b
Sai Swagat Mishra, Aaqid Bhat, P. Sahoo
The origin of matter domination in the Universe is one of the most exciting open puzzles in particle physics and cosmology. Despite many theoretical developments, the actual reason behind baryon-antibaryon asymmetry is still unknown. Our aim here is to examine this phenomenon in the framework of modified gravity theories, which have impressively elucidated the contemporary accelerated expansion of the universe as well as the early phase. Consequently, this letter sets its sights on the task of constraining a specific variant of modified gravity, namely, $f(Q)$ gravity, in conjunction with gravitational baryogenesis. The Power Law model and recently proposed DGP-like $f(Q)$ models are considered to find the baryon-to-entropy ratio and compare them with the observed value, that is ${n_B}/s=9.42times 10^{-11}$. Furthermore, we impose constraints on the additional degrees of freedom introduced by this modified theory of gravity.
{"title":"Probing baryogenesis in f(Q) gravity","authors":"Sai Swagat Mishra, Aaqid Bhat, P. Sahoo","doi":"10.1209/0295-5075/ad329b","DOIUrl":"https://doi.org/10.1209/0295-5075/ad329b","url":null,"abstract":"\u0000 The origin of matter domination in the Universe is one of the most exciting open puzzles in particle physics and cosmology. Despite many theoretical developments, the actual reason behind baryon-antibaryon asymmetry is still unknown. Our aim here is to examine this phenomenon in the framework of modified gravity theories, which have impressively elucidated the contemporary accelerated expansion of the universe as well as the early phase. Consequently, this letter sets its sights on the task of constraining a specific variant of modified gravity, namely, $f(Q)$ gravity, in conjunction with gravitational baryogenesis. The Power Law model and recently proposed DGP-like $f(Q)$ models are considered to find the baryon-to-entropy ratio and compare them with the observed value, that is ${n_B}/s=9.42times 10^{-11}$. Furthermore, we impose constraints on the additional degrees of freedom introduced by this modified theory of gravity.","PeriodicalId":503117,"journal":{"name":"Europhysics Letters","volume":"88 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140251792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-11DOI: 10.1209/0295-5075/ad329c
A. Chilingarian, T. Karapetyan, B. Sargsyan, M. Zazyan, Johannes Knapp, Michael Walter, T. Rehm
This letter presents a rare physical phenomenon associated with solar activity, manifesting in anomalies within neutron, electron, and gamma-ray fluxes in the atmosphere. Conventionally, Earth's magnetic field disturbances reduce cosmic ray intensity reaching the surface. However, a temporary surge in cosmic ray flux occurs intermittently known as the Magnetospheric Effect (ME). Our observations reveal that this effect predominantly induces a count rate increase in particle detectors positioned at middle latitudes on mountaintops. On November 5, 2023, a 2-3% increase in neutron monitors at mountain altitudes and up to 5% increase in thin plastic scintillators registering electrons and gamma rays. This flux escalation coincided with a southward orientation of the interplanetary magnetic field. Importantly, we present, for the first time, the energy spectrum of the Magnetospheric Effect observed at two mountaintops: Aragats and Zugspitze. Simulations of low-energy proton interactions in the terrestrial atmosphere affirm the augmentation of low-energy cosmic rays. Protons, typically restricted by the geomagnetic cutoff, reached the Earth's atmosphere, generating detectable particle showers on the Earth's surface.
{"title":"Increase in the count rates of ground-based cosmic-ray detectors caused by the heliomagnetic disturbance on 5 November 2023","authors":"A. Chilingarian, T. Karapetyan, B. Sargsyan, M. Zazyan, Johannes Knapp, Michael Walter, T. Rehm","doi":"10.1209/0295-5075/ad329c","DOIUrl":"https://doi.org/10.1209/0295-5075/ad329c","url":null,"abstract":"\u0000 This letter presents a rare physical phenomenon associated with solar activity, manifesting in anomalies within neutron, electron, and gamma-ray fluxes in the atmosphere. Conventionally, Earth's magnetic field disturbances reduce cosmic ray intensity reaching the surface. However, a temporary surge in cosmic ray flux occurs intermittently known as the Magnetospheric Effect (ME). Our observations reveal that this effect predominantly induces a count rate increase in particle detectors positioned at middle latitudes on mountaintops. On November 5, 2023, a 2-3% increase in neutron monitors at mountain altitudes and up to 5% increase in thin plastic scintillators registering electrons and gamma rays. This flux escalation coincided with a southward orientation of the interplanetary magnetic field. Importantly, we present, for the first time, the energy spectrum of the Magnetospheric Effect observed at two mountaintops: Aragats and Zugspitze. Simulations of low-energy proton interactions in the terrestrial atmosphere affirm the augmentation of low-energy cosmic rays. Protons, typically restricted by the geomagnetic cutoff, reached the Earth's atmosphere, generating detectable particle showers on the Earth's surface.","PeriodicalId":503117,"journal":{"name":"Europhysics Letters","volume":"12 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140253654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-07DOI: 10.1209/0295-5075/ad3188
Pengcheng Li, Tianbo Ye, Suohai Fan
Recent studies on memory-based cooperative evolution have focused on random selection of learning objects and only considered average payoff, neglecting stability of payoff. Here, we propose a preference selection mechanism adopting the TOPSIS method, a multi-attribute decision-making approach. We introduce the weighting factors ω1 and ω2, which refer to average payoff and stability of payoff, respectively. The probability that an individual select his neighbor is influenced by both average payoff and stability. We investigate the effect of memory length M and ω1 on the evolution of cooperation. The simulation results indicate that M and ω1 can both somewhat promote cooperation. Given that ω1 = ω2 = 0.5, for small betrayal temptation b, cooperation is more robust for small M, while for large b, large values of M are preferred. Further exploring the impact of ω1, for relatively small b, the influence of ω1 on cooperation is gradually revealed and strengthened as M increases. Conversely, for relatively large b, the impact of ω1 on cooperation slowly diminishes from strong as M increase, reflecting a gradual rise in the importance of stability. These findings enhance understanding of cooperative behavior in real social environments and make more rational decisions under the multi-factor evaluation based on average payoff and stability.
最近关于基于记忆的合作进化的研究主要集中在学习对象的随机选择上，而且只考虑了平均报酬，忽略了报酬的稳定性。在此，我们提出一种偏好选择机制，采用多属性决策方法--TOPSIS 法。我们引入了权重因子ω1和ω2，它们分别指平均报酬和报酬稳定性。个体选择邻居的概率受平均报酬和稳定性的影响。我们研究了记忆长度 M 和 ω1 对合作演化的影响。模拟结果表明，M 和 ω1 都能在一定程度上促进合作。鉴于 ω1 = ω2 = 0.5，对于较小的背叛诱惑 b，小 M 的合作更为稳健，而对于较大的 b，大 M 值更受欢迎。进一步探讨ω1 的影响，对于相对较小的 b，随着 M 的增加，ω1 对合作的影响逐渐显现并加强。相反，对于相对较大的 b，随着 M 的增加，ω1 对合作的影响从强慢慢减弱，这反映了稳定性的重要性逐渐上升。这些发现加深了人们对真实社会环境中合作行为的理解，使人们在基于平均报酬和稳定性的多因素评价下做出更合理的决策。
{"title":"The impact of preferential selection mechanism based on average payoff and stability of payoff on the evolution of cooperation","authors":"Pengcheng Li, Tianbo Ye, Suohai Fan","doi":"10.1209/0295-5075/ad3188","DOIUrl":"https://doi.org/10.1209/0295-5075/ad3188","url":null,"abstract":"\u0000 Recent studies on memory-based cooperative evolution have focused on random selection of learning objects and only considered average payoff, neglecting stability of payoff. Here, we propose a preference selection mechanism adopting the TOPSIS method, a multi-attribute decision-making approach. We introduce the weighting factors ω1 and ω2, which refer to average payoff and stability of payoff, respectively. The probability that an individual select his neighbor is influenced by both average payoff and stability. We investigate the effect of memory length M and ω1 on the evolution of cooperation. The simulation results indicate that M and ω1 can both somewhat promote cooperation. Given that ω1 = ω2 = 0.5, for small betrayal temptation b, cooperation is more robust for small M, while for large b, large values of M are preferred. Further exploring the impact of ω1, for relatively small b, the influence of ω1 on cooperation is gradually revealed and strengthened as M increases. Conversely, for relatively large b, the impact of ω1 on cooperation slowly diminishes from strong as M increase, reflecting a gradual rise in the importance of stability. These findings enhance understanding of cooperative behavior in real social environments and make more rational decisions under the multi-factor evaluation based on average payoff and stability.","PeriodicalId":503117,"journal":{"name":"Europhysics Letters","volume":"41 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140260363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-05DOI: 10.1209/0295-5075/ad3052
Qi Han, Ning Bai, Shuai Wang, Lijie Gou, Rong Zhang
In this letter, it is sufficient to simply tensor the single-particle unitary operator U1 for the evolution operator U2 of two-particle that do not have interactions. Subsequently, the operator U1is diagonalized and the relative distance between two non-interacting particles on the 2D lattice at the moment t is obtained using the distance evolution operator.
在这封信中，只需简单地将单粒子单元算子 U1 张量为不存在相互作用的双粒子演化算子 U2。随后，将算子 U1 对角化，利用距离演化算子就能得到 t 时刻二维晶格上两个无相互作用粒子之间的相对距离。
{"title":"Quantum walk of two non-interacting particles on a 2D lattice","authors":"Qi Han, Ning Bai, Shuai Wang, Lijie Gou, Rong Zhang","doi":"10.1209/0295-5075/ad3052","DOIUrl":"https://doi.org/10.1209/0295-5075/ad3052","url":null,"abstract":"\u0000 In this letter, it is sufficient to simply tensor the single-particle unitary operator U1 for the evolution operator U2 of two-particle that do not have interactions. Subsequently, the operator U1is diagonalized and the relative distance between two non-interacting particles on the 2D lattice at the moment t is obtained using the distance evolution operator.","PeriodicalId":503117,"journal":{"name":"Europhysics Letters","volume":"5 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140263185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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