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20152026
most citedDirect Observation of Mono-, Bi-, and Tri-layer Charge Density Waves in 1T-TaS_2 by Transmission Electron Microscopy without a Substrate

40 citations · 67 across the 10 of their papers we have counts for

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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…