Zobrazeno 1 - 10
of 187
pro vyhledávání: '"Pastawski, Horacio M"'
Autor:
Lozano-Negro, Fabricio S., Sánchez, Claudia M., Chattah, Ana K., Álvarez, Gonzalo A., Pastawski, Horacio M.
Out-of-Time-Order Correlators (OTOCs) serve as a proxy for quantum information scrambling, which refers to the process where information stored locally disperses across the many-body degrees of freedom in a quantum system, rendering it inaccessible t
Externí odkaz:
http://arxiv.org/abs/2407.03273
Autor:
Lozano-Negro, Fabricio S., Ferreyra-Ortega, Marcos A., Bendersky, Denise, Fernández-Alcázar, Lucas, Pastawski, Horacio M.
Publikováno v:
Journal of Physics: Condensed Matter, 2022, vol. 34, no 21, p. 214006
Through an appropriate election of the molecular orbital basis, we show analytically that the molecular dissociation occurring in a Heyrovsky reaction can be interpreted as a Quantum Dynamical Phase Transition, i.e., an analytical discontinuity in th
Externí odkaz:
http://arxiv.org/abs/2201.02471
In the long quest to identify and compensate the sources of decoherence in many-body systems far from the ground state, the varied family of Loschmidt echoes (LEs) became an invaluable tool in several experimental techniques. A LE involves a time-rev
Externí odkaz:
http://arxiv.org/abs/2112.00607
Publikováno v:
Chaos, Solitons & Fractals, 2021, vol. 150, p. 111175
The metal-insulator transition (MIT), which includes Anderson localization and Mott insulators as extreme regimes, has received renewed interest as the many-body effects often constitute a limitation for the handling of quantum interference. This res
Externí odkaz:
http://arxiv.org/abs/2106.07370
Autor:
Deghi, Sebastián E., Fernández-Alcázar, Lucas J., Pastawski, Horacio M., Bustos-Marún, Raúl A.
In recent years, there has been an increasing interest in nanoelectromechanical devices, current-driven quantum machines, and the mechanical effects of electric currents on nanoscale conductors. Here, we carry out a thorough study of the current-indu
Externí odkaz:
http://arxiv.org/abs/2011.05477
Autor:
Sánchez, Claudia M., Chattah, Ana Karina, Wei, Ken Xuan, Buljubasich, Lisandro, Cappellaro, Paola, Pastawski, Horacio M.
Publikováno v:
Phys. Rev. Lett. 124, 030601 (2020)
Evaluating the role of perturbations versus the intrinsic coherent dynamics in driving to equilibrium is of fundamental interest to understand quantum many-body thermalization, in the quest to build ever complex quantum devices. Here we introduce a p
Externí odkaz:
http://arxiv.org/abs/1902.06628
Publikováno v:
Phys. Rev. B 99, 045403 (2019)
In recent years there has been an increasing interest in nanomachines. Among them, current-driven ones deserve special attention as quantum effects can play a significant role there. Examples of the latter are the so-called adiabatic quantum motors.
Externí odkaz:
http://arxiv.org/abs/1810.00220
Publikováno v:
Phys. Scripta 92(3), 033001 (2017)
If a magnetic polarization excess is locally injected in a crystal of interacting spins, this "excitation" would spread as consequence of spin-spin interactions. Such an apparently irreversible process is known as spin diffusion and it can lead the s
Externí odkaz:
http://arxiv.org/abs/1702.01475
Publikováno v:
Phys. Rev. B 95, 155410 (2017)
Different proposals for adiabatic quantum motors (AQMs) driven by DC currents have recently attracted considerable interest. However, the systems studied are often based on simplified models with highly ideal conditions where the environment is negle
Externí odkaz:
http://arxiv.org/abs/1612.09166
Publikováno v:
Papers in Physics 7, 070012 (2015)
A local excitation in a quantum many-particle system evolves deterministically. A time-reversal procedure, involving the invertion of the signs of every energy and interaction, should produce an excitation revival: the Loschmidt echo (LE). If somewha
Externí odkaz:
http://arxiv.org/abs/1510.06283