Tim Langen, Jordi Bosonat, Juan Sánchez-Baena, Raúl Bombín, Tijs Karman, Ferran Mazzanti
We simulate a molecular Bose-Einstein condensate in the strongly dipolar regime, observing the existence of self-bound droplets, as well as their splitting into multiple droplets by confinement-induced frustration. Our quantum Monte Carlo approach goes beyond the limits of the established effective mean-field theories for dipolar quantum gases, revealing small droplets produced by strong dipolar interactions outside known stable regimes. The simulations include realistic molecular interactions and therefore have direct relevance for current and future experiments.
{"title":"Dipolar droplets of strongly interacting molecules","authors":"Tim Langen, Jordi Bosonat, Juan Sánchez-Baena, Raúl Bombín, Tijs Karman, Ferran Mazzanti","doi":"arxiv-2407.09391","DOIUrl":"https://doi.org/arxiv-2407.09391","url":null,"abstract":"We simulate a molecular Bose-Einstein condensate in the strongly dipolar\u0000regime, observing the existence of self-bound droplets, as well as their\u0000splitting into multiple droplets by confinement-induced frustration. Our\u0000quantum Monte Carlo approach goes beyond the limits of the established\u0000effective mean-field theories for dipolar quantum gases, revealing small\u0000droplets produced by strong dipolar interactions outside known stable regimes.\u0000The simulations include realistic molecular interactions and therefore have\u0000direct relevance for current and future experiments.","PeriodicalId":501521,"journal":{"name":"arXiv - PHYS - Quantum Gases","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141718336","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 manuscript studies harmonically trapped ideal Bose and Fermi gas systems and their thermodynamics in the framework of the Extended Uncertainty Principle (EUP). In particular, we reveal how the ground and thermal particle ratios, condensate temperature, internal energy, specific heat and equation of state functions change in the EUP formalism. Nevertheless, we conclude that, in contrast to the effects of the Gravitational (Generalized) Uncertainty Principle (GUP), the EUP modifications can be disregarded in ideal Bose and Fermi gas systems.
{"title":"The ideal gas of Bosons and Fermions in Harmonic Traps in the framework of Extended Uncertainty Principle","authors":"B. Hamil, B. C. Lütfüoğlu","doi":"arxiv-2407.08429","DOIUrl":"https://doi.org/arxiv-2407.08429","url":null,"abstract":"This manuscript studies harmonically trapped ideal Bose and Fermi gas systems\u0000and their thermodynamics in the framework of the Extended Uncertainty Principle\u0000(EUP). In particular, we reveal how the ground and thermal particle ratios,\u0000condensate temperature, internal energy, specific heat and equation of state\u0000functions change in the EUP formalism. Nevertheless, we conclude that, in\u0000contrast to the effects of the Gravitational (Generalized) Uncertainty\u0000Principle (GUP), the EUP modifications can be disregarded in ideal Bose and\u0000Fermi gas systems.","PeriodicalId":501521,"journal":{"name":"arXiv - PHYS - Quantum Gases","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141612037","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}
Condensation of exciton-polaritons has been recently observed in one-dimensional photonic crystal waveguides, exploiting the interplay of long-lived gap confined eigenmodes and negative mass polariton branches. Here we focus on the theoretical emergence of a second emission threshold, in addition to the one associated with condensation at zero-momentum, due to the nonlinear polariton scattering from the condensate into finite momentum eigenmodes. The physics of this spatially modulated condensate is related to a spontaneous breaking of both phase and translational symmetries simultaneously, bearing strong similarities with the highly sought supersolid phase in Helium and ultracold atomic gases but with a novel mechanism typical of the driven-dissipative scenario. We then propose clear-cut and unequivocal experimental signatures that would allow to identify supersolidity phenomena in polariton condensates
{"title":"Supersolidity of polariton condensates in photonic crystal waveguides","authors":"Davide Nigro, Dimitrios Trypogeorgos, Antonio Gianfrate, Daniele Sanvitto, Iacopo Carusotto, Dario Gerace","doi":"arxiv-2407.06671","DOIUrl":"https://doi.org/arxiv-2407.06671","url":null,"abstract":"Condensation of exciton-polaritons has been recently observed in\u0000one-dimensional photonic crystal waveguides, exploiting the interplay of\u0000long-lived gap confined eigenmodes and negative mass polariton branches. Here\u0000we focus on the theoretical emergence of a second emission threshold, in\u0000addition to the one associated with condensation at zero-momentum, due to the\u0000nonlinear polariton scattering from the condensate into finite momentum\u0000eigenmodes. The physics of this spatially modulated condensate is related to a\u0000spontaneous breaking of both phase and translational symmetries simultaneously,\u0000bearing strong similarities with the highly sought supersolid phase in Helium\u0000and ultracold atomic gases but with a novel mechanism typical of the\u0000driven-dissipative scenario. We then propose clear-cut and unequivocal\u0000experimental signatures that would allow to identify supersolidity phenomena in\u0000polariton condensates","PeriodicalId":501521,"journal":{"name":"arXiv - PHYS - Quantum Gases","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574176","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}
Nina S. Voronova, Elena V. Skirdova, I. L. Kurbakov, Grigory E. Astrakharchik
We derive universal relations between thermodynamic quantities and the pair distribution function for bosons interacting via power-law interactions in three and two dimensions. We find beyond mean-field expressions for Tan's contact and establish new connections between the chemical potential and potential energy per particle, characteristic of systems with finite-range interactions. The obtained results are relevant for dipoles, quadrupoles, Rydberg atoms, excitons, van der Waals atoms, and other systems in the dilute limit.
{"title":"Universal relations in Bose gases with power-law interactions in two and three dimensions","authors":"Nina S. Voronova, Elena V. Skirdova, I. L. Kurbakov, Grigory E. Astrakharchik","doi":"arxiv-2407.06419","DOIUrl":"https://doi.org/arxiv-2407.06419","url":null,"abstract":"We derive universal relations between thermodynamic quantities and the pair\u0000distribution function for bosons interacting via power-law interactions in\u0000three and two dimensions. We find beyond mean-field expressions for Tan's\u0000contact and establish new connections between the chemical potential and\u0000potential energy per particle, characteristic of systems with finite-range\u0000interactions. The obtained results are relevant for dipoles, quadrupoles,\u0000Rydberg atoms, excitons, van der Waals atoms, and other systems in the dilute\u0000limit.","PeriodicalId":501521,"journal":{"name":"arXiv - PHYS - Quantum Gases","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574423","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}
The identity of quantum matter can be effectively altered by means of gauge fields. In two spatial dimensions this is illustrated by the Chern-Simons flux-attachment mechanism, but such a mechanism is not possible in lower dimensions. Here, we study a one-dimensional interacting Bose gas in the presence of a gauge field. This model can be explicitly mapped into an interacting anyonic system by a large gauge transformation, indicating a statistical transmutation analogous to that of Chern-Simons. The Bogoliubov spectrum in the weakly-interacting limit reveals the presence of a roton minimum arising from the statistical interaction. At a mean-field level chiral solitons are recovered. Should these be understood as quantum bound states, it is natural to interpret them as corresponding to localised anyonic quasiparticles. Hydrodynamic arguments highlight the presence of dispersive chiral shock waves in the propagation of a wavepacket due to a Riemann-Hopf nonlinearity. Numerical calculations show the presence of both chiral soliton trains and shock waves.
{"title":"Dual approach to soft-core anyonic Lieb-Liniger fluids","authors":"Gerard Valentí-Rojas, Patrik Öhberg","doi":"arxiv-2407.06108","DOIUrl":"https://doi.org/arxiv-2407.06108","url":null,"abstract":"The identity of quantum matter can be effectively altered by means of gauge\u0000fields. In two spatial dimensions this is illustrated by the Chern-Simons\u0000flux-attachment mechanism, but such a mechanism is not possible in lower\u0000dimensions. Here, we study a one-dimensional interacting Bose gas in the\u0000presence of a gauge field. This model can be explicitly mapped into an\u0000interacting anyonic system by a large gauge transformation, indicating a\u0000statistical transmutation analogous to that of Chern-Simons. The Bogoliubov\u0000spectrum in the weakly-interacting limit reveals the presence of a roton\u0000minimum arising from the statistical interaction. At a mean-field level chiral\u0000solitons are recovered. Should these be understood as quantum bound states, it\u0000is natural to interpret them as corresponding to localised anyonic\u0000quasiparticles. Hydrodynamic arguments highlight the presence of dispersive\u0000chiral shock waves in the propagation of a wavepacket due to a Riemann-Hopf\u0000nonlinearity. Numerical calculations show the presence of both chiral soliton\u0000trains and shock waves.","PeriodicalId":501521,"journal":{"name":"arXiv - PHYS - Quantum Gases","volume":"369 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574425","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}
Parth Sabharwal, Daniel G. Allman, Pradipta Debnath, Kevin C. Wright
Using matter-wave interference, we have investigated thermal phase fluctuations in narrow coplanar, concentric rings of ultracold fermionic superfluids. We found that the correlation length decreases with number density, consistent with theoretical expectations. We also observed that increasing the coupling between the rings leads to greater overall coherence in the system. The phase fluctuations increased with a change from periodic to closed boundary conditions as we applied a potential barrier at one point in a ring. These results are relevant for the implementation of proposals to utilize ultracold quantum gases in large and elongated circuit-like geometries, especially those that require deterministic preparation and control of quantized circulation states.
{"title":"Thermal Phase Fluctuations in Narrow Superfluid Rings","authors":"Parth Sabharwal, Daniel G. Allman, Pradipta Debnath, Kevin C. Wright","doi":"arxiv-2407.04229","DOIUrl":"https://doi.org/arxiv-2407.04229","url":null,"abstract":"Using matter-wave interference, we have investigated thermal phase\u0000fluctuations in narrow coplanar, concentric rings of ultracold fermionic\u0000superfluids. We found that the correlation length decreases with number\u0000density, consistent with theoretical expectations. We also observed that\u0000increasing the coupling between the rings leads to greater overall coherence in\u0000the system. The phase fluctuations increased with a change from periodic to\u0000closed boundary conditions as we applied a potential barrier at one point in a\u0000ring. These results are relevant for the implementation of proposals to utilize\u0000ultracold quantum gases in large and elongated circuit-like geometries,\u0000especially those that require deterministic preparation and control of\u0000quantized circulation states.","PeriodicalId":501521,"journal":{"name":"arXiv - PHYS - Quantum Gases","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574426","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}
We determine the phase diagram of a one-dimensional Bose gas in the presence of disorder with short- and long-range correlations, the latter decaying with distance as $1/|x|^{1+sigma}$. When $sigma<0$, the Berezinskii-Kosterlitz-Thouless transition between the superfluid and the localized phase is driven by the long-range correlations and the Luttinger parameter $K$ takes the critical value $K_c(sigma)=3/2-sigma/2$. The localized phase is a Bose glass for $sigma>sigma_c=3-pi^2/3simeq -0.289868$, and a Mott glass -- characterized by a vanishing compressibility and a gapless conductivity -- when $sigma
{"title":"Mott-glass phase induced by long-range correlated disorder in a one-dimensional Bose gas","authors":"Nicolas Dupuis, Andrei A. Fedorenko","doi":"arxiv-2407.03430","DOIUrl":"https://doi.org/arxiv-2407.03430","url":null,"abstract":"We determine the phase diagram of a one-dimensional Bose gas in the presence\u0000of disorder with short- and long-range correlations, the latter decaying with\u0000distance as $1/|x|^{1+sigma}$. When $sigma<0$, the\u0000Berezinskii-Kosterlitz-Thouless transition between the superfluid and the\u0000localized phase is driven by the long-range correlations and the Luttinger\u0000parameter $K$ takes the critical value $K_c(sigma)=3/2-sigma/2$. The\u0000localized phase is a Bose glass for $sigma>sigma_c=3-pi^2/3simeq\u0000-0.289868$, and a Mott glass -- characterized by a vanishing compressibility\u0000and a gapless conductivity -- when $sigma<sigma_c$. Our conclusions, based on\u0000the nonperturbative functional renormalization group and perturbative\u0000renormalization group, are confirmed by the study of the case $sigma=-1$,\u0000corresponding to a perfectly correlated disorder in space, where the model is\u0000exactly solvable in the semiclassical limit $Kto 0^+$.","PeriodicalId":501521,"journal":{"name":"arXiv - PHYS - Quantum Gases","volume":"65 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574430","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}
Laurent H. A. Simons, Michiel Wouters, Jacques Tempere
The supersolid phase of a dipolar Bose-Einstein condensate has an intriguing excitation spectrum displaying a band structure. Here, the dressing of an impurity in a one-dimensional dipolar supersolid with the excitations of the supersolid is studied. The ground-state energy of the supersolid polaron is calculated using a variational path integral approach, which obtained accurate results for other polaron systems within the Bogoliubov and Fr"ohlich approximations. A divergence is observed at the superfluid-supersolid phase transition. The polaron radius is also computed, showing that for strong impurity-atom interactions, the polaron can become localized to a single droplet, behaving like a small solid-state polaron.
{"title":"Polarons in supersolids: path-integral treatment of an impurity in a one-dimensional dipolar supersolid","authors":"Laurent H. A. Simons, Michiel Wouters, Jacques Tempere","doi":"arxiv-2407.03505","DOIUrl":"https://doi.org/arxiv-2407.03505","url":null,"abstract":"The supersolid phase of a dipolar Bose-Einstein condensate has an intriguing\u0000excitation spectrum displaying a band structure. Here, the dressing of an\u0000impurity in a one-dimensional dipolar supersolid with the excitations of the\u0000supersolid is studied. The ground-state energy of the supersolid polaron is\u0000calculated using a variational path integral approach, which obtained accurate\u0000results for other polaron systems within the Bogoliubov and Fr\"ohlich\u0000approximations. A divergence is observed at the superfluid-supersolid phase\u0000transition. The polaron radius is also computed, showing that for strong\u0000impurity-atom interactions, the polaron can become localized to a single\u0000droplet, behaving like a small solid-state polaron.","PeriodicalId":501521,"journal":{"name":"arXiv - PHYS - Quantum Gases","volume":"500 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574429","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}
Dimitrios Trypogeorgos, Antonio Gianfrate, Manuele Landini, Davide Nigro, Dario Gerace, Iacopo Carusotto, Fabrizio Riminucci, Kirk W. Baldwin, Loren N. Pfeiffer, Giovanni I. Martone, Milena De Giorgi, Dario Ballarini, Daniele Sanvitto
A supersolid is a counter-intuitive phase of matter where its constituent particles are arranged into a crystalline structure, yet they are free to flow without friction. This requires the particles to share a global macroscopic phase while being able to reduce their total energy by spontaneous, spatial self-organisation. This exotic state of matter has been achieved in different systems using Bose-Einstein condensates coupled to cavities, possessing spin-orbit coupling, or dipolar interactions. Here we provide experimental evidence of a new implementation of the supersolid phase in a novel non-equilibrium context based on exciton-polaritons condensed in a topologically non-trivial, bound-in-the-continuum state with exceptionally low losses. We measure the density modulation of the polaritonic state indicating the breaking of translational symmetry with a remarkable precision of a few parts in a thousand. Direct access to the phase of the wavefunction allows us to additionally measure the local coherence of the superfluid component. We demonstrate the potential of our synthetic photonic material to host phonon dynamics and a multimode excitation spectrum.
{"title":"Emerging supersolidity from a polariton condensate in a photonic crystal waveguide","authors":"Dimitrios Trypogeorgos, Antonio Gianfrate, Manuele Landini, Davide Nigro, Dario Gerace, Iacopo Carusotto, Fabrizio Riminucci, Kirk W. Baldwin, Loren N. Pfeiffer, Giovanni I. Martone, Milena De Giorgi, Dario Ballarini, Daniele Sanvitto","doi":"arxiv-2407.02373","DOIUrl":"https://doi.org/arxiv-2407.02373","url":null,"abstract":"A supersolid is a counter-intuitive phase of matter where its constituent\u0000particles are arranged into a crystalline structure, yet they are free to flow\u0000without friction. This requires the particles to share a global macroscopic\u0000phase while being able to reduce their total energy by spontaneous, spatial\u0000self-organisation. This exotic state of matter has been achieved in different\u0000systems using Bose-Einstein condensates coupled to cavities, possessing\u0000spin-orbit coupling, or dipolar interactions. Here we provide experimental\u0000evidence of a new implementation of the supersolid phase in a novel\u0000non-equilibrium context based on exciton-polaritons condensed in a\u0000topologically non-trivial, bound-in-the-continuum state with exceptionally low\u0000losses. We measure the density modulation of the polaritonic state indicating\u0000the breaking of translational symmetry with a remarkable precision of a few\u0000parts in a thousand. Direct access to the phase of the wavefunction allows us\u0000to additionally measure the local coherence of the superfluid component. We\u0000demonstrate the potential of our synthetic photonic material to host phonon\u0000dynamics and a multimode excitation spectrum.","PeriodicalId":501521,"journal":{"name":"arXiv - PHYS - Quantum Gases","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141515196","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}
Dynamical association of Efimov trimers in thermal gases by means of modulated magnetic fields has proven very fruitful in determining the binding energy of trimers. The latter was extracted from the number of remaining atoms, which featured oscillatory fringes stemming from the superposition of trimers with atom-dimers. Subsequent theoretical investigations utilizing the time-dependent three-body problem revealed additional association mechanisms, manifested as superpositions of the Efimov state with the trap states and the latter with atom-dimers. The three atoms were initialized in a way to emulate a thermal gas with uniform density. Here, this analysis is extended by taking into account the effects of the density profile of a semi-classical thermal gas. The supersposition of the Efimov trimer with the first atom-dimer remains the same, while the frequencies of highly oscillatory fringes shift to lower values. The latter refer to the frequencies of trimers and atom-dimers in free space since the density profile smears out the contribution of trap states.
{"title":"Density effects on the interferometry of Efimov states by modulating magnetic fields","authors":"G. Bougas, S. I. Mistakidis, P. Giannakeas","doi":"arxiv-2407.02621","DOIUrl":"https://doi.org/arxiv-2407.02621","url":null,"abstract":"Dynamical association of Efimov trimers in thermal gases by means of\u0000modulated magnetic fields has proven very fruitful in determining the binding\u0000energy of trimers. The latter was extracted from the number of remaining atoms,\u0000which featured oscillatory fringes stemming from the superposition of trimers\u0000with atom-dimers. Subsequent theoretical investigations utilizing the\u0000time-dependent three-body problem revealed additional association mechanisms,\u0000manifested as superpositions of the Efimov state with the trap states and the\u0000latter with atom-dimers. The three atoms were initialized in a way to emulate a\u0000thermal gas with uniform density. Here, this analysis is extended by taking\u0000into account the effects of the density profile of a semi-classical thermal\u0000gas. The supersposition of the Efimov trimer with the first atom-dimer remains\u0000the same, while the frequencies of highly oscillatory fringes shift to lower\u0000values. The latter refer to the frequencies of trimers and atom-dimers in free\u0000space since the density profile smears out the contribution of trap states.","PeriodicalId":501521,"journal":{"name":"arXiv - PHYS - Quantum Gases","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141548879","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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