36 citations
- Hokkaido UniversityJP8 papers
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- 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
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Showing 2017Show 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…
cond-mat.str-el2017★ 8 cited
Lock-in transition of charge density waves in quasi-one-dimensional conductors: reinterpretation of McMillan's theory
Katsuhiko Inagaki, Satoshi Tanda
We investigated the lock-in transition of charge density waves (CDWs) in quasi-one-dimensional conductors, based on McMillan's free energy. The higher-order umklapp terms play an e…
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…