# On the broken time translation symmetry in macroscopic systems: Precessing states and off-diagonal long-range order

@article{Volovik2013OnTB, title={On the broken time translation symmetry in macroscopic systems: Precessing states and off-diagonal long-range order}, author={Grigory E. Volovik}, journal={JETP Letters}, year={2013}, volume={98}, pages={491-495} }

The broken symmetry state with off-diagonal long-range order (ODLRO), which is characterized by the vacuum expectation value of the operator of creation of the conserved quantum number Q, has the time-dependent order parameter. However, the breaking of the time translation symmetry is observable only if the charge Q is not strictly conserved and may decay. This dichotomy is resolved in systems with quasi-ODLRO. These systems have two well separated relaxation times: the relaxation time τQ of…

## 23 Citations

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