Notes on time entanglement and pseudo-entropy
Abstrak
Abstract Following arXiv:2210.12963 [hep-th], we investigate aspects of the time evolution operator regarded as a density operator and associated entanglement-like structures in various quantum systems. These involve timelike separations and generically lead to complex-valued entropy, although there are interesting real subfamilies. There are many parallels and close relations with reduced transition matrices and pseudo-entropy, which we discuss and clarify. For instance, a related quantity involves the time evolution operator along with a projection onto some initial state, which amounts to analysing pseudo-entropy for the initial state and its time-evolved final state.
Topik & Kata Kunci
Penulis (2)
K. Narayan
Hitesh K. Saini
Akses Cepat
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Cek di sumber asli →- Tahun Terbit
- 2024
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- DOI
- 10.1140/epjc/s10052-024-12855-x
- Akses
- Open Access ✓