28 citations · 30 across the 9 of their papers we have counts for
11 papers
Probing weak chaos in super Yang-Mills and long-range spin chains
Pawel Caputa, Brian Creed, Rathindra Nath Das +2
We study signatures of quantum chaos in finite-loop truncations of the planar dilatation operator in the sector of super Yang-Mills and its -de…
Experimental observation of hyperbolic spacetime dynamics
Jonas Himmel, Coraline Bacq, Krishna Chand Maurya +11
Understanding quantum dynamics in curved spacetime is a central challenge at the intersection of quantum mechanics and gravity. Anti-de-Sitter (AdS) spacetime plays a pivotal role…
Integrability breaking in semiclassical strings in Koopman-Krylov space
Rathindra Nath Das, Saskia Demulder
While very powerful, integrability in semiclassical string solutions is known to be a rare property. Motivated by the need to understand and characterise the large landscape of non…
Complexity and the Hilbert space dimension of 3D gravity
Vijay Balasubramanian, Rathindra Nath Das, Johanna Erdmenger +2
A central problem in formulating a theory of quantum gravity is to determine the size and structure of the Hilbert space of black holes. Here we use a quantum dynamical Krylov comp…
Timelike Entanglement Signatures of Ergodicity and Spectral Chaos
Rathindra Nath Das, Arnab Kundu, Nemai Chandra Sarkar
We investigate timelike entanglement measures derived from the spacetime density kernel in the Rosenzweig-Porter model and show that they sharply diagnose both eigenvector ergodici…
Probing the Chaos to Integrability Transition in Double-Scaled SYK
Sergio E. Aguilar-Gutierrez, Rathindra Nath Das, Johanna Erdmenger +1
We investigate how a thermodynamical first-order phase transition affects the dynamical chaotic behaviour of a given model. To this effect, we analyze the model of Berkooz, Brukner…
Temporal correlations and chaos from spacetime kernel
Rathindra Nath Das, Arnab Kundu, Matheus H. Martins Costa +1
We develop a finite-dimensional formulation of the recently introduced notion of ``timelike entanglement'', defined in terms of two-point functions between operators supported on d…
Spread complexity for the planar limit of holography
Rathindra N. Das, Saskia Demulder, Johanna Erdmenger +1
Complexity is a fundamental characteristic of states within a quantum system. Its use is however mostly limited to bosonic systems, inhibiting its present applicability to supersym…
Krylov complexity of purification
Rathindra Nath Das, Takato Mori
In quantum systems, purification can map mixed states into pure states and a non-unitary evolution into a unitary one by enlarging the Hilbert space. We establish a connection betw…
Spread complexity and localization in -symmetric systems
Aranya Bhattacharya, Rathindra Nath Das, Bidyut Dey +1
We present a framework for investigating wave function spreading in -symmetric quantum systems using spread complexity and spread entropy. We consider a tight-binding…
Spread complexity for measurement-induced non-unitary dynamics and Zeno effect
Aranya Bhattacharya, Rathindra Nath Das, Bidyut Dey +1
Using spread complexity and spread entropy, we study non-unitary quantum dynamics. For non-hermitian Hamiltonians, we extend the bi-Lanczos construction for the Krylov basis to the…