A bstract In this work, we investigate the quantum chaos in various\(T\overline {T}\)-deformed
SYK models with finite N, including the SYK 4, the supersymmetric SYK 4, and the SYK 2 …

The harmonic oscillator is the paragon of physical models; conceptually and computationally
simple, yet rich enough to teach us about physics on scales that span classical mechanics to …

A long period of linear growth in the spectral form factor provides a universal diagnostic of
quantum chaos at intermediate times. By contrast, the behavior of the spectral form factor in …

We study the connections between three quantities that can be used as diagnostics for
quantum chaos, ie, the out-of-time-order correlator (OTOC), Loschmidt echo (LE), and …

We consider a noninteracting many-fermion system populating levels of a unitary random
matrix ensemble (equivalent to the q= 2 complex Sachdev-Ye-Kitaev model)—a generic …

A bstract We discuss conditions under which a deterministic sequence of real numbers,
interpreted as the set of eigenvalues of a Hamiltonian, can exhibit features usually …

A bstract We consider a black hole with a stretched horizon as a toy model for a fuzzball
microstate. The stretched horizon provides a cut-off, and therefore one can determine the …

A bstract In this article, building on our recent investigations and motivated by the fuzzball-
paradigm, we explore normal modes of a probe massless scalar field in the rotating BTZ …

A bstract In this note we study the spectral form factor in the SYK model in large q limit at
infinite temperature. We construct analytic solutions for the saddle point equations that …

We study 2-local Hamiltonian quantum systems, consisting of qubits interacting on the star
graph of N vertices. We numerically demonstrate that these models are generically non …