Observation of a Time Quasicrystal and Its Transition to a Superfluid Time Crystal

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Observation of a Time Quasicrystal and Its Transition to a Superfluid Time Crystal. / Autti, S.; Eltsov, V. B.; Volovik, G. E.

In: Physical Review Letters, Vol. 120, No. 21, 215301, 25.05.2018, p. 1-5.

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@article{c961bbe927fe43bf8358a171aa6b0816,
title = "Observation of a Time Quasicrystal and Its Transition to a Superfluid Time Crystal",
abstract = "We report experimental realization of a quantum time quasicrystal and its transformation to a quantum time crystal. We study Bose-Einstein condensation of magnons, associated with coherent spin precession, created in a flexible trap in superfluid He3-B. Under a periodic drive with an oscillating magnetic field, the coherent spin precession is stabilized at a frequency smaller than that of the drive, demonstrating spontaneous breaking of discrete time translation symmetry. The induced precession frequency is incommensurate with the drive, and hence, the obtained state is a time quasicrystal. When the drive is turned off, the self-sustained coherent precession lives a macroscopically long time, now representing a time crystal with broken symmetry with respect to continuous time translations. Additionally, the magnon condensate manifests spin superfluidity, justifying calling the obtained state a time supersolid or a time supercrystal.",
author = "S. Autti and Eltsov, {V. B.} and Volovik, {G. E.}",
note = "| openaire: EC/H2020/694248/EU//TOPVAC",
year = "2018",
month = "5",
day = "25",
doi = "10.1103/PhysRevLett.120.215301",
language = "English",
volume = "120",
pages = "1--5",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "21",

}

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TY - JOUR

T1 - Observation of a Time Quasicrystal and Its Transition to a Superfluid Time Crystal

AU - Autti, S.

AU - Eltsov, V. B.

AU - Volovik, G. E.

N1 - | openaire: EC/H2020/694248/EU//TOPVAC

PY - 2018/5/25

Y1 - 2018/5/25

N2 - We report experimental realization of a quantum time quasicrystal and its transformation to a quantum time crystal. We study Bose-Einstein condensation of magnons, associated with coherent spin precession, created in a flexible trap in superfluid He3-B. Under a periodic drive with an oscillating magnetic field, the coherent spin precession is stabilized at a frequency smaller than that of the drive, demonstrating spontaneous breaking of discrete time translation symmetry. The induced precession frequency is incommensurate with the drive, and hence, the obtained state is a time quasicrystal. When the drive is turned off, the self-sustained coherent precession lives a macroscopically long time, now representing a time crystal with broken symmetry with respect to continuous time translations. Additionally, the magnon condensate manifests spin superfluidity, justifying calling the obtained state a time supersolid or a time supercrystal.

AB - We report experimental realization of a quantum time quasicrystal and its transformation to a quantum time crystal. We study Bose-Einstein condensation of magnons, associated with coherent spin precession, created in a flexible trap in superfluid He3-B. Under a periodic drive with an oscillating magnetic field, the coherent spin precession is stabilized at a frequency smaller than that of the drive, demonstrating spontaneous breaking of discrete time translation symmetry. The induced precession frequency is incommensurate with the drive, and hence, the obtained state is a time quasicrystal. When the drive is turned off, the self-sustained coherent precession lives a macroscopically long time, now representing a time crystal with broken symmetry with respect to continuous time translations. Additionally, the magnon condensate manifests spin superfluidity, justifying calling the obtained state a time supersolid or a time supercrystal.

UR - http://www.scopus.com/inward/record.url?scp=85047760053&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.120.215301

DO - 10.1103/PhysRevLett.120.215301

M3 - Article

VL - 120

SP - 1

EP - 5

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 21

M1 - 215301

ER -

ID: 25722100