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quant-ph2026
Operator-frame geometry of non-compact quantum systems with frame-vacuum phase transitions
Satoshi Tanaka, Gonzalo Ordonez, Masatoshi Kubota +2
We formulate the geometric structure of non-compact bosonic quantum systems in regimes where vacuum instability renders the relevant quantum states non-normalizable, causing conven…
quant-ph2026
Non-Hermitian Quantum Mechanics of Open Quantum Systems: Revisiting The One-Body Problem
Naomichi Hatano, Gonzalo Ordonez
We review analyses of open quantum systems. We show how non-Hermiticity arises in an open quantum system with an infinite environment, focusing on the one-body problem. One of the…