Now showing items 12-31 of 62

    • Decay of a thermofield-double state in chaotic quantum systems. 

      del Campo, A.; Molina-Vilaplana, J.; Santos, Lea F.; Sonner, J. (EDP Sciences, 2018-09)
      Scrambling in interacting quantum systems out of equilibrium is particularly effective in the chaotic regime. Under time evolution, initially localized information is said to be scrambled as it spreads throughout the entire ...
    • Dynamical Detection of Level Repulsion in the One-Particle Aubry-André Model. 

      Torres-Herrera, E. Jonathan; Santos, Lea F. (MDPI : Multidisciplinary Digital Publishing Institute, 2020-01-20)
      Abstract: The analysis of level statistics provides a primary method to detect signatures of chaos in the quantum domain. However, for experiments with ion traps and cold atoms, the energy levels are not as easily ...
    • Dynamical signatures of quantum chaos and relaxation time scales in a spin-boson system. 

      Santos, Lea F.; Bastarrachea-Magnani, M. A.; Lerma-Hernández, S.; Torres-Herrera, E.J.; Hirsch, J.G.; Villaseñor, D. (American Physical Society, 2019-07-31)
      Quantum systems whose classical counterparts are chaotic typically have highly correlated eigenvalues and level statistics that coincide with those from ensembles of full random matrices. A dynamical manifestation of these ...
    • Dynamical signatures of quantum chaos and relaxation timescales in a spin-boson system. 

      Lerma-Hernández, S.; Villaseñor, D.; Bastarrachea-Magnani, M. A.; Torres-Herrera, E.J.; Santos, Lea F.; Hirsch, J.G. (Philip Allan Publishers Limited, 2019-05-10)
      Quantum systems whose classical counterparts are chaotic typically have highly correlated eigenvalues and level statistics that coincide with those from ensembles of full random matrices. A dynamical manifestation of these ...
    • Dynamics at the many-body localization transition. 

      Torres-Herrera, E.J.; Santos, Lea F. (American Physical Society, 2015-07)
      The isolated one-dimensional Heisenberg model with static random magnetic fields has become paradigmatic for the analysis of many-body localization. Here, we study the dynamics of this system initially prepared in a ...
    • The early Bronze Age fortifications at Tell Es-Safi/Gath, Israel. 

      Katz, Jill; Shai, Itzhaq; Chadwick, Jeffrey R.; Welch, Eric; Greenfield, Haskey J.; Maeir, Aren M. (Routledge: Taylor & Francis Group, 2016)
      Tell es-Safi/Gath is a multi-period site located on the border between the Judean foothills (Shephelah) and the southern coastal plain in central Israel, which has been subject to survey and excavations over the last two ...
    • Entanglement in quantum computers described by the XXZ model with defects. 

      Santos, Lea F. (American Physical Society, 2003-06)
      We investigate on how to generate maximally entangled states in systems characterized by the Hamiltonian of the XXZ model with defects. Some proposed quantum computers are described by such a model. Defects embedded in ...
    • Entropy of Isolated Quantum Systems after a Quench. 

      Santos, Lea F.; Rigol, Marcos; Polkovnikov, Anatoli (American Physical Society, 2011-07-18)
      A diagonal entropy, which depends only on the diagonal elements of the system’s density matrix in the energy representation, has been recently introduced as the proper definition of thermodynamic entropy in out-of-equilibrium ...
    • Excited-state quantum phase transitions studied from a non-Hermitian perspective. 

      Sindelka, Milan; Santos, Lea F.; Moiseyev, Nimrod (American Physical Society, 2017-01-24)
      A main distinguishing feature of non-Hermitian quantum mechanics is the presence of exceptional points (EPs). They correspond to the coalescence of two energy levels and their respective eigenvectors. Here, we use the ...
    • Experimental Detection of the Correlation R ́enyi Entropy in the Central Spin Model. 

      Santos, Lea F.; Niknam, Mohamad; Cory, David G. (2020-11)
      We propose and experimentally measure an entropy that quantifies the volume of correlations among qubits.The experiment is carried out on a nearly isolated quantum system composed of a central spin coupled and initially ...
    • Exponentially fast dynamics in the Fock space of chaotic man y-body systems. 

      Borgonovi, F.; Izrailev, F.M.; Santos, Lea F. (arXiv.org, 2018-02-22)
      We demonstrate analytically and numerically that in isolated quantum systems of many interacting particles, the number of states participating in the evolution after a quench increases exponentially in time, provided the ...
    • Exponentially fast dynamics of chaotic many-body systems. 

      Borgonovi, F.; Izrailev, F.M.; Santos, Lea F. (American Physical Society, 2019-01-02)
      We demonstrate analytically and numerically that in isolated quantum systems of many interacting particles, the number of many-body states participating in the evolution after a quench increases exponentially in time, ...
    • From few- to many-body quantum systems. 

      Schiulaz, Mauro; Tavora, Marco; Santos, Lea F. (IOP Publishing, 2018-09-03)
      How many particles are necessary to make a quantum system many-body? To answer this question, we take as reference for the many-body limit a quantum system at half-filling and compare its properties with those of a system ...
    • Generic dynamical features of quenched interacting quantum systems: Survival probability, density imbalance, and out-of-time-ordered correlator. 

      Torres-Herrera, E.J.; Garcia-Garcia, Antonio M.; Santos, Lea F. (American Physical Society, 2018-02-23)
      We study numerically and analytically the quench dynamics of isolated many-body quantum systems. Using full random matrices from the Gaussian orthogonal ensemble, we obtain analytical expressions for the evolution of the ...
    • How many particles make up a chaotic many-body quantum system? 

      Santos, Lea F.; Zisling, Guy; Bar Lev, Yevgeny (arXiv preprint arXiv:2012.14436, 2020-12-28)
      We numerically investigate the minimum number of interacting particles, which is required for the onset of strong chaos in quantum systems on a one-dimensional lattice with short-range and long-range interactions. We ...
    • Interview with Prof. Jill Katz at Tel es Safi. [video] 

      Katz, Jill C.; Selavan, Nachliel (Israel: Nachliel Selavan Museum Tours [museumtours.co.il], 2016-07)
      Interview with Prof. Dr. Jill C. Katz, Stern College for Women, Yeshiva University and Nachliel Selavan about Tel es Safi, Goliath's hometown).
    • Level repulsion and dynamics in the finite one-dimensional Anderson model. 

      Santos, Lea F.; Torres-Herrera, E. Jonathan; Méndez-Bermúdez, J. A. (American Physical Society, 2019-08-29)
      Abstract This work shows that dynamical features typical of full random matrices can be observed also in the simple finite one-dimensional (1D) noninteracting Anderson model with nearest-neighbor couplings. In the ...
    • Level Repulsion and Dynamics in the Finite One-Dimensional Anderson Model. 

      Torres-Herrera, E. Jonathan; Méndez-Bermúdez, J. A.; Santos, Lea F. (Philip Allan Publishers Limited, 2019-09-12)
      This work shows that dynamical features typical of full random matrices can be observed also in the simple finite one-dimensional (1D) noninteracting Anderson model with nearest neighbor couplings. In the thermodynamic ...
    • Localization and the effects of symmetries in the thermalization properties of one-dimensional quantum systems. 

      Santos, Lea F.; Rigol, Marcos (American Physical Society, 2010)
      We study how the proximity to an integrable point or to localization as one approaches the atomic limit, as well as the mixing of symmetries in the chaotic domain, may affect the onset of thermalization in finite one-dimensional ...
    • A note on rabbinic titles and the communities that create them. 

      Fine, Steven (The Michael Scharf Publication Trust of Yeshiva University Press ; Maggid Books, 2018)