Article
Astronomy & Astrophysics
Stephen L. Adler
Summary: In this study, we combine the concepts of a Weyl scaling invariant dark energy action and the gravastar theory. By utilizing the Tolman-Oppenheimer-Volkoff equation, we investigate the structure and dynamics of gravastars. Our Mathematica notebooks demonstrate that the structural changes of gravastars are determined by the action and equation of state, and the radii at which these changes occur are not predetermined. Additionally, we calculate the effects of a very small black hole wind using a relativistic extension of standard pressure-driven isothermal stellar wind theory.
Article
Materials Science, Multidisciplinary
Anton Khvalyuk, Mikhail Feigel'man
Summary: We developed an analytic theory of inhomogeneous superconducting pairing in strongly disordered materials close to the superconducting-insulator transition. Our key finding is that the distribution function of the order parameter depends crucially on the effective number of nearest neighbors, with the solution valid for both large and small values of this parameter. The analytic results are supported by numerical data, showing good agreement between them.
Article
Physics, Multidisciplinary
Amir Burshtein, Roman Kuzmin, Vladimir E. Manucharyan, Moshe Goldstein
Summary: Recent advances in circuit quantum electrodynamics have enabled the observation of inelastic collisions between single microwave photons and instantons, offering insights for research in other quantum field theoretical contexts. The study also indicates that the inelastic scattering probability can significantly exceed the impact of conventional Josephson quartic anharmonicity and mach order-unity values.
PHYSICAL REVIEW LETTERS
(2021)
Article
Optics
Ling-Feng Zhang, Ling-Zhi Tang, Zhi-Hao Huang, Guo-Qing Zhang, Wei Huang, Dan-Wei Zhang
Summary: This study utilizes machine learning to study the unique topological properties in non-Hermitian systems, training neural networks to predict relevant topological invariants with nearly 100% accuracy. Demonstrations in various models show the capability of neural networks to explore topological invariants and predict them successfully in untouched phase regions.
Article
Optics
Frederik Moller, Thomas Schweigler, Mohammadamin Tajik, Joao Sabino, Federica Cataldini, Si-Cong Ji, Joerg Schmiedmayer
Summary: A neural network model is designed to extract and process features from absorption images of one-dimensional Bose gases in the quasicondensate regime, predicting system temperature and uncertainty. The network achieves similar precision to established methods with fewer realizations, highlighting efficiency gains in cold gas experiments. Feature maps reveal local condensate features and their correlation with system properties, with potential applications in uncovering physical relations in complex systems.
Article
Materials Science, Multidisciplinary
V. T. Dolgopolov, M. Yu Melnikov, A. A. Shashkin, S-H Huang, C. W. Liu, S. Kravchenko
Summary: In an ultraclean strongly interacting bivalley SiGe/Si/SiGe two-dimensional electron system, minima of longitudinal resistance corresponding to the quantum Hall effect of composite fermions are observed at different quantum numbers p = 1, 2, 3, 4, and 6. The disappearance of the minimum at p = 3 below a certain electron density, while the surrounding minima at p = 2 and p = 4 survive at significantly lower densities, suggests the intersection or merging of quantum levels of composite fermions with different valley indices, revealing the valley effect on fractions.
Article
Physics, Multidisciplinary
T. Kalsi, A. Romito, H. Schomerus
Summary: This study investigates the measurement-induced entanglement transition in quantum circuits built upon Dyson's three circular ensembles. By contrasting different ensembles, the study reveals the interplay between the local entanglement generation by the gates and the entanglement reduction by the measurements.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2022)
Article
Multidisciplinary Sciences
A. Mironov, M. C. Diamantini, C. A. Trugenberger, V. M. Vinokur
Summary: Superinsulators, the mirror-twins of superconductors, have been studied to explore strong interaction charge confinement. This research reports the non-equilibrium relaxation of electric pions in superinsulator films and reveals power law relationships and critical exponents associated with applied voltage and electric field effects. The findings provide experimental evidence for electric strings' linear potential confining opposite charges and open new routes for studying fundamental strong interaction phenomena.
SCIENTIFIC REPORTS
(2022)
Article
Quantum Science & Technology
Jorge Chavez-Carlos, Talia L. M. Lezama, Rodrigo G. G. Cortinas, Jayameenakshi Venkatraman, Michel H. H. Devoret, Victor S. S. Batista, Francisco Perez-Bernal, Lea F. F. Santos
Summary: Transmon qubits are widely used in circuit-based quantum information processing due to their controllability and ease of engineering implementation. In addition to serving as qubits, transmons can also be used to investigate fundamental physics questions. This study explores their use as simulators of excited state quantum phase transitions (ESQPTs), and shows that experimentally observed spectral kissing in a driven SNAIL-transmon is a precursor to ESQPT. The study further explores the dynamical consequences of ESQPT, which have implications for superconducting circuits, cold atoms, and ion traps experiments.
NPJ QUANTUM INFORMATION
(2023)
Article
Mechanics
Nitesh Jaiswal, Mamta Gautam, Tapobrata Sarkar
Summary: In this study, the relationship between Nielsen complexity, Loschmidt echo, and Fubini-Study complexity in the transverse XY model after a sudden quantum quench was investigated. It was found that NC and LE are related at small times and show enhanced temporal oscillations in the thermodynamic limit, especially when quenching from a close neighborhood of the critical line.
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
(2022)
Article
Physics, Multidisciplinary
Benjamin Geiger, Juan Diego Urbina, Klaus Richter
Summary: In this study, the fate of 1/N expansions in unstable many-body quantum systems is considered, showing the emergence of e(2 lambda t)/N as a renormalized parameter governing the quantum-classical transition. The results provide formal grounds for a conjectured multiexponential form of out-of-time-ordered correlators in scrambling many-body hyperbolic systems.
PHYSICAL REVIEW LETTERS
(2021)
Article
Multidisciplinary Sciences
Emmanuel Stiakakis, Niklas Jung, Natasa Adzic, Taras Balandin, Emmanuel Kentzinger, Ulrich Rucker, Ralf Biehl, Jan K. G. Dhont, Ulrich Jonas, Christos N. Likos
Summary: Researchers have successfully demonstrated the existence of well-controlled soft matter cluster crystals and reversible phase transition in a novel triblock copolymer. Experimental results also show the formation of various ordered nanostructures, including BCC cluster crystals, birefringent cluster crystals, and hexagonal phases at high densities.
NATURE COMMUNICATIONS
(2021)
Article
Multidisciplinary Sciences
Rhine Samajdar, Wen Wei Ho, Hannes Pichler, Mikhail D. Lukin, Subir Sachdev
Summary: Density-matrix renormalization group calculations show a wide variety of complex solid phases and a region with dense Rydberg excitations, large entanglement entropy, and no local order parameter on the kagome lattice of neutral atoms at zero temperature. The regime could contain one or more phases with topological order, as suggested by mapping to the triangular lattice quantum dimer model and theories of quantum phase transitions. These results lay the foundation for theoretical and experimental explorations of crystalline and liquid states using programmable quantum simulators based on Rydberg atom arrays.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Physics, Multidisciplinary
Amit Jamadagni, Arpan Bhattacharyya
Summary: The paper examines the sensitivity of topological phases of matter to the underlying topology, showing that phase transitions are accompanied by symmetry breaking in the excitation space. Various signatures like ground state degeneracy and topological entanglement entropy are analyzed, while the introduction of the open-loop operator effectively captures the phase transition. Furthermore, the analysis is extended to an open quantum setup by defining effective collapse operators that cool the system to distinct steady states, both of which are topologically ordered, with the phase transition between them effectively captured by the expectation value of the open-loop operator.
NEW JOURNAL OF PHYSICS
(2021)
Article
Physics, Fluids & Plasmas
Jianmin Shen, Wei Li, Shengfeng Deng, Tao Zhang
Summary: In this paper, machine learning techniques are utilized to study non-equilibrium phase transitions, successfully capturing critical behaviors of directed percolation models with consideration of the time dimension. Supervised learning and unsupervised learning methods are employed to extract features and estimate critical points effectively.
Article
Physics, Multidisciplinary
Joao C. Getelina, Thiago R. de Oliveira, Jose A. Hoyos
Article
Multidisciplinary Sciences
Cesar A. Uliana Lima, Frederico Brito, Jose A. Hoyos, Daniel A. Turolla Vanzella
NATURE COMMUNICATIONS
(2019)
Article
Physics, Condensed Matter
Joao C. Getelina, Jose A. Hoyos
EUROPEAN PHYSICAL JOURNAL B
(2020)
Article
Physics, Condensed Matter
Victor L. Quito, Pedro L. S. Lopes, Jose A. Hoyos, Eduardo Miranda
EUROPEAN PHYSICAL JOURNAL B
(2020)
Article
Physics, Multidisciplinary
Martin Puschmann, Jack Crewse, Jose A. Hoyos, Thomas Vojta
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Multidisciplinary
Martin Puschmann, Joao C. Getelina, Jose A. Hoyos, Thomas Vojta
Summary: The study reveals that the Higgs mode is spatially localized in both phases, while the Goldstone mode delocalizes in the superfluid phase. The scalar spectral function shows a noncritical broad peak, and the lowest-energy Goldstone mode exhibits a zero-frequency spectral peak in the superfluid phase.
Article
Physics, Multidisciplinary
Ariel Y. O. Fernandes, Jose A. Hoyos, Andre P. Vieira
Summary: This article investigates the nonequilibrium critical behavior of the contact process with deterministic aperiodic temporal disorder. The authors test the generalized criterion in the mean-field limit using analytic and numerical calculations.
BRAZILIAN JOURNAL OF PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Jose A. Hoyos, R. F. P. Costa, J. C. Xavier
Summary: We investigate a class of disordered quantum systems and find that the dynamical partition function exhibits non-analytical behavior in a time window after certain quantum quenches. This behavior is attributed to rare and large regions with atypical inhomogeneity configurations. We quantify the strength of the associated singularities and their experimental and numerical signatures.
Article
Materials Science, Multidisciplinary
Alexander H. O. Wada, Jose A. Hoyos
Summary: Using the density-matrix renormalization-group method, we studied the spin-spin correlation measures of a quenched disordered system. The distribution of the bulk correlations, when properly rescaled by an associated Lyapunov exponent, is found to be a narrow and universal probability function.
Article
Materials Science, Multidisciplinary
Francisco C. Alcaraz, Jose A. Hoyos, Rodrigo A. Pimenta
Summary: In this study, a numerical method for evaluating mass gaps and low-lying energy gaps of free-fermionic and free-parafermionic quantum chains is proposed, and its effectiveness is demonstrated through examples involving Ising quantum chains with uniform and random coupling constants. The use of the Laguerre bound as an initial guess for the largest root in the method is shown to provide accurate estimates for mass gaps sharing similar finite-size behavior as exact results. Additionally, the method is compared with the strong-disorder renormalization-group method in terms of computational efficiency and accuracy.
Article
Materials Science, Multidisciplinary
Michel M. J. Miranda, Igor C. Almeida, Eric C. Andrade, Jose A. Hoyos
Summary: The study shows that the finite-temperature Ising-type transition of the clean system is destroyed in the presence of any finite concentration of impurities, being replaced by a paramagnet with nematic glass order. This transition is attributed to disorder inducing noncollinear spin-vortex-crystal order and producing a conjugated transverse dipolar random field.
Article
Physics, Fluids & Plasmas
Alexander H. O. Wada, Jose A. Hoyos
Summary: In this paper, the critical properties of the nonequilibrium phase transition of the SEI model under the effects of long-range correlated time-varying environmental noise are studied. It is shown that temporal noise is perturbatively relevant, changing the universality class of the system, and also predicts the difficulty of observing the associated active temporal Griffiths phase in the long-time limit. Additionally, an equivalence between the infinite-noise and the compact directed percolation universality classes is demonstrated by relating the SEI model to the Domany-Kinzel cellular automaton in the limit of compact clusters.
Article
Materials Science, Multidisciplinary
V. L. Quito, P. L. S. Lopes, Jose A. Hoyos, E. Miranda
Article
Physics, Fluids & Plasmas
C. E. Fiore, M. M. de Oliveira, Jose A. Hoyos
Article
Materials Science, Multidisciplinary
Andre P. Vieira, Jose A. Hoyos
