Zobrazeno 1 - 10
of 115
pro vyhledávání: '"Lemarié, G"'
Publikováno v:
Phys. Rev. Research 5, L032011 (2023)
Experiments in cold atom systems see almost identical signatures of many body localization (MBL) in both one-dimensional ($d=1$) and two-dimensional ($d=2$) systems despite the thermal avalanche hypothesis showing that the MBL phase is unstable for $
Externí odkaz:
http://arxiv.org/abs/2202.09072
Autor:
Swain, N., Tang, H. -K., Foo, D. C. W., Khor, B. J. J., Lemarié, G., Assaad, F. F., Sengupta, P., Adam, S.
We present a computational framework to identify Hamiltonians of interacting quantum many-body systems that host non-ergodic excited states. We combine quantum Monte Carlo simulations with the recently proposed eigenstate-to-Hamiltonian construction,
Externí odkaz:
http://arxiv.org/abs/2106.08587
Publikováno v:
Phys. Rev. Research 3, 022023 (2021)
Quantum multifractality is a fundamental property of systems such as non-interacting disordered systems at an Anderson transition and many-body systems in Hilbert space. Here we discuss the origin of the presence or absence of a fundamental symmetry
Externí odkaz:
http://arxiv.org/abs/2103.03068
Autor:
Arnal, M., Chatelain, G., Martinez, M., Dupont, N., Giraud, O., Ullmo, D., Georgeot, B., Lemarié, G., Billy, J., Guéry-Odelin, D.
Publikováno v:
Science Advances 6, eabc4886 (2020)
The field of quantum simulation, which aims at using a tunable quantum system to simulate another, has been developing fast in the past years as an alternative to the all-purpose quantum computer. In particular, the use of temporal driving has attrac
Externí odkaz:
http://arxiv.org/abs/2003.10387
Publikováno v:
Phys. Rev. Research 2, 012020 (2020)
We present a full description of the nonergodic properties of wavefunctions on random graphs without boundary in the localized and critical regimes of the Anderson transition. We find that they are characterized by two critical localization lengths:
Externí odkaz:
http://arxiv.org/abs/1904.08869
Publikováno v:
Phys. Rev. A 94, 043621 (2016)
In the presence of a complex classical dynamics associated with a mixed phase space, a quantum wave function can tunnel between two stable islands through the chaotic sea, an effect that has no classical counterpart. This phenomenon, referred to as c
Externí odkaz:
http://arxiv.org/abs/1605.00931
Publikováno v:
Phys. Rev. E 92, 032914 (2015)
We present a comprehensive study of the destruction of quantum multifractality in the presence of perturbations. We study diverse representative models displaying multifractality, including a pseudointegrable system, the Anderson model and a random m
Externí odkaz:
http://arxiv.org/abs/1506.05720
Publikováno v:
Phys. Rev. Lett. 112, 234101 (2014)
We expose two scenarios for the breakdown of quantum multifractality under the effect of perturbations. In the first scenario, multifractality survives below a certain scale of the quantum fluctuations. In the other one, the fluctuations of the wave
Externí odkaz:
http://arxiv.org/abs/1402.1658
Autor:
Lemarié, G., Kamlapure, A., Bucheli, D., Benfatto, L., Lorenzana, J., Seibold, G., Ganguli, S. C., Raychaudhuri, P., Castellani, C.
Publikováno v:
Phys. Rev. B 87, 184509 (2013)
We investigate theoretically and experimentally the statistical properties of the inhomogeneous order-parameter distribution (OPD) at the verge of the superconductor-insulator transition (SIT). We find within two prototype fermionic and bosonic model
Externí odkaz:
http://arxiv.org/abs/1208.3336
Publikováno v:
EPL 87, 37007 (2009)
We report a numerical analysis of the Anderson transition in a quantum-chaotic system, the quasiperiodic kicked rotor with three incommensurate frequencies. It is shown that this dynamical system exhibits the same critical phenomena as the truly rand
Externí odkaz:
http://arxiv.org/abs/0904.2324