3 papers
quant-ph2025
Entanglement-limited linear response in fermionic systems
Hadi Cheraghi, Ali G. Moghaddam, Teemu Ojanen
We propose a general connection between entanglement-entropy scaling laws and the linear response functions of particle-conserving fermionic systems in their ground state. Specific…
cond-mat.stat-mech2024
Fisher zeroes and dynamical quantum phase transitions for two- and three-dimensional models
Tomasz MasÅowski, Hadi Cheraghi, Jesko Sirker +1
Dynamical quantum phase transitions are non-analyticities in a dynamical free energy (or return rate) which occur at critical times. Although extensively studied in one dimension,…
quant-ph2024
Spin squeezing: Thermal behavior and distribution on excited states
Saeed Mahdavifar, Hadi Cheraghi, Kourosh Afrousheh
We investigate the spin-squeezing behavior under thermal effects in a one-dimensional transverse field XY model with spin-1/2. The exact solution of the model helps us to compute t…