Tag: Quantum many-body systems
Conic optimization tightened thermal bootstrap bounds in large-N matrix models
What the study found The study found that thermal bootstrap bounds for large-N matrix quantum mechanics can be improved without logarithmic relaxation by using a Quantum Information Conic Solver. In the one-matrix case, the stricter bounds gave a value for the first long string excited energy that is within 0.001% of the physical value. Why…
Localized BFSS phases are linked to instability and phase transitions
What the study found The study finds that the recently discovered localized and non-uniform phases of BFSS matrix quantum mechanics can be derived from first principles. It also finds that the uniform BFSS phase corresponds to a black string in a pp-wave background, which is unstable to a Gregory-Laflamme instability. Why the authors say this…
Causality-based algorithm extends nonequilibrium Green’s function time simulations
Algorithm exploiting causality for efficient nonequilibrium Green’s function calculations via quantics tensor trains, enabling extended simulations of quench dynamics in symmetry-broken phases.
