5 papers
Entanglement entropy of fermions in a strange metal
Santanu Singh, Surajit Bera, Chenyuan Li +2
The subsystem-size dependence of ground-state entanglement entropy and its crossover to thermal entropy as a function of temperature are well understood for one-dimensional (1D) ga…
Generation of Volume-Law Entanglement by Local-Measurement-Only Quantum Dynamics
Surajit Bera, Igor V. Gornyi, Sumilan Banerjee +1
Repeated local measurements typically have adversarial effects on entangling unitary dynamics, as local measurements usually degrade entanglement. However, recent works on measurem…
Sachdev-Ye-Kitaev Model in a Quantum Glassy Landscape
Surajit Bera, Jorge Kurchan, Marco Schiro
We study a generalization of `Yukawa models' in which Majorana fermions, interacting via all-to-all random couplings as in the Sachdev-Ye-Kitaev (SYK) model, are parametrically cou…
Non-Stabilizerness of Sachdev-Ye-Kitaev Model
Surajit Bera, Marco Schirò
We study the non-stabilizerness or quantum magic of the Sachdev-Ye-Kitaev () model, a prototype example of maximally chaotic quantum matter. We show that the Majorana spec…
Information scrambling and butterfly velocity in quantum spin glass chains
Venkata Lokesh K. Y, Surajit Bera, Sumilan Banerjee
We make lattice generalization of two well-known zero-dimensional models of quantum spin glass, Sachdev-Ye (SY) and spherical quantum -spin glass model, to one dimension for stu…