### Abstract

A particle in a uniformly accelerated motion exhibits Brownian random motions around the classical trajectory due to the coupling to the field vacuum fluctuations. Previous works show that the Brownian random motions satisfy the energy equipartition relation. This thermal property is understood as the consequence of the Unruh effect. In the present work, we investigate the radiation from the thermal random motions of an accelerated particle coupled to vacuum fluctuations. The energy flux of this radiation is negative of the order smaller than the classical radiation by the factor a/m, where a is the acceleration constant and m is the mass of a particle. The results could be understood as a suppression of the classical radiation by the quantum effect.

Original language | English |
---|---|

Article number | 045027 |

Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |

Volume | 92 |

Issue number | 4 |

DOIs | |

Publication status | Published - Aug 24 2015 |

Externally published | Yes |

### Fingerprint

### All Science Journal Classification (ASJC) codes

- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)

### Cite this

*Physical Review D - Particles, Fields, Gravitation and Cosmology*,

*92*(4), [045027]. https://doi.org/10.1103/PhysRevD.92.045027

**Quantum radiation from a particle in an accelerated motion coupled to vacuum fluctuations.** / Oshita, Naritaka; Yamamoto, Kazuhiro; Zhang, Sen.

Research output: Contribution to journal › Article

*Physical Review D - Particles, Fields, Gravitation and Cosmology*, vol. 92, no. 4, 045027. https://doi.org/10.1103/PhysRevD.92.045027

}

TY - JOUR

T1 - Quantum radiation from a particle in an accelerated motion coupled to vacuum fluctuations

AU - Oshita, Naritaka

AU - Yamamoto, Kazuhiro

AU - Zhang, Sen

PY - 2015/8/24

Y1 - 2015/8/24

N2 - A particle in a uniformly accelerated motion exhibits Brownian random motions around the classical trajectory due to the coupling to the field vacuum fluctuations. Previous works show that the Brownian random motions satisfy the energy equipartition relation. This thermal property is understood as the consequence of the Unruh effect. In the present work, we investigate the radiation from the thermal random motions of an accelerated particle coupled to vacuum fluctuations. The energy flux of this radiation is negative of the order smaller than the classical radiation by the factor a/m, where a is the acceleration constant and m is the mass of a particle. The results could be understood as a suppression of the classical radiation by the quantum effect.

AB - A particle in a uniformly accelerated motion exhibits Brownian random motions around the classical trajectory due to the coupling to the field vacuum fluctuations. Previous works show that the Brownian random motions satisfy the energy equipartition relation. This thermal property is understood as the consequence of the Unruh effect. In the present work, we investigate the radiation from the thermal random motions of an accelerated particle coupled to vacuum fluctuations. The energy flux of this radiation is negative of the order smaller than the classical radiation by the factor a/m, where a is the acceleration constant and m is the mass of a particle. The results could be understood as a suppression of the classical radiation by the quantum effect.

UR - http://www.scopus.com/inward/record.url?scp=84940399405&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84940399405&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.92.045027

DO - 10.1103/PhysRevD.92.045027

M3 - Article

AN - SCOPUS:84940399405

VL - 92

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

SN - 1550-7998

IS - 4

M1 - 045027

ER -