36 citations
- Hokkaido UniversityJP8 papers
- University of HoustonUS8 papers
- Hiroshima UniversityJP2 papers
- National Institute for Materials ScienceJP2 papers
- Dartmouth CollegeUS1 paper
- Kyoto Sangyo UniversityJP1 paper
- Los Alamos National LaboratoryUS1 paper
- Nara University of EducationJP1 paper
- National Institute of Technology, Toyama CollegeJP1 paper
- Tohoku UniversityJP1 paper
Showing 2017 · quant-phShow all
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quant-ph2017
Time Operators and Time Crystals
K. Nakatsugawa, T. Fujii, A. Saxena +1
We investigate time operators in the context of quantum time crystals in ring systems. A generalized commutation relation called the generalized weak Weyl relation is used to deriv…
quant-ph2017★ 23 cited
Quantum Time Crystal By Decoherence: Proposal With Incommensurate Charge Density Wave Ring
Keiji Nakatsugawa, Toshiyuki Fujii, Satoshi Tanda
We show that time translation symmetry of a ring system with a macroscopic quantum ground state is broken by decoherence. In particular, we consider a ring-shaped incommensurate ch…