Zobrazeno 1 - 10
of 414
pro vyhledávání: '"Verbaarschot P"'
Autor:
Altland, Alexander, Kim, Kun Woo, Micklitz, Tobias, Rezaei, Maedeh, Sonner, Julian, Verbaarschot, Jacobus J. M.
In recent years, the physics of many-body quantum chaotic systems close to their ground states has come under intensified scrutiny. Such studies are motivated by the emergence of model systems exhibiting chaotic fluctuations throughout the entire spe
Externí odkaz:
http://arxiv.org/abs/2403.13516
A distinct feature of Hermitian quantum chaotic dynamics is the exponential increase of certain out-of-time-order-correlation (OTOC) functions around the Ehrenfest time with a rate given by a Lyapunov exponent. Physically, the OTOCs describe the grow
Externí odkaz:
http://arxiv.org/abs/2403.12359
Publikováno v:
Phys. Rev. D 109, 105017 (2024)
Studies of many-body non-Hermitian parity-time (PT)-symmetric quantum systems are attracting a lot of interest due to their relevance in research areas ranging from quantum optics and continuously monitored dynamics to Euclidean wormholes in quantum
Externí odkaz:
http://arxiv.org/abs/2311.15677
The identification, description, and classification of topological features is an engine of discovery and innovation in several fields of physics. This research encompasses a broad variety of systems, from the integer and fractional Chern insulators
Externí odkaz:
http://arxiv.org/abs/2311.14640
The saturation of a recently proposed universal bound on the Lyapunov exponent has been conjectured to signal the existence of a gravity dual. This saturation occurs in the low temperature limit of the dense Sachdev-Ye-Kitaev (SYK) model, $N$ Majoran
Externí odkaz:
http://arxiv.org/abs/2311.00639
Publikováno v:
Phys. Rev. Lett. 132, 061603 (2024)
In the infrared limit, a nearly anti-de Sitter spacetime in two dimensions (AdS$_2$) perturbed by a weak double trace deformation and a two-site $(q>2)$-body Sachdev-Ye-Kitaev (SYK) model with $N$ Majoranas and a weak $2r$-body intersite coupling sha
Externí odkaz:
http://arxiv.org/abs/2305.09663
Publikováno v:
Phys. Rev. D 107, 066007 (2023)
Spectral rigidity in Hermitian quantum chaotic systems signals the presence of dynamical universal features at timescales that can be much shorter than the Heisenberg time. We study the analog of this timescale in many-body non-Hermitian quantum chao
Externí odkaz:
http://arxiv.org/abs/2211.01650
Publikováno v:
Phys. Rev. D 107, 106006 (2023)
We study the out-of-equilibrium dynamics of a Sachdev-Ye-Kitaev (SYK) model, $N$ fermions with a $q$-body interaction of infinite range, coupled to a Markovian environment. Close to the infinite-temperature steady state, the real-time Lindbladian dyn
Externí odkaz:
http://arxiv.org/abs/2210.01695
Recent studies have revealed intriguing similarities between the contribution of wormholes to the gravitational path integral and the phenomenon of replica symmetry breaking observed in spin glasses and other disordered systems. Interestingly, these
Externí odkaz:
http://arxiv.org/abs/2203.13080
We analyze a two-body nonhermitian two-site Sachdev-Ye-Kitaev model with the couplings of one site complex conjugated to the other site. This model, with no explicit coupling between the sites, shows an infinite number of phase transitions which is a
Externí odkaz:
http://arxiv.org/abs/2201.05952