### Abstract

We investigate the properties of quantum radiation produced by a uniformly accelerating charged particle undergoing thermal random motion, which originates from the coupling to the vacuum fluctuations of the electromagnetic field. Because the thermal random motion is regarded to result from the Unruh effect, the quantum radiation might give us hints of the Unruh effect. The energy flux of the quantum radiation is negative and smaller than that of Larmor radiation by one order in a/m, where a is the constant acceleration and m is the mass of the particle. Thus, the quantum radiation appears to be a suppression of the classical Larmor radiation. The quantum interference effect plays an important role in this unique signature. The results are consistent with the predictions of a model consisting of a particle coupled to a massless scalar field as well as those of the previous studies on the quantum effect on the Larmor radiation.

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

Article number | 085016 |

Journal | Physical Review D |

Volume | 93 |

Issue number | 8 |

DOIs | |

Publication status | Published - Apr 12 2016 |

Externally published | Yes |

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### All Science Journal Classification (ASJC) codes

- Physics and Astronomy (miscellaneous)

### Cite this

*Physical Review D*,

*93*(8), [085016]. https://doi.org/10.1103/PhysRevD.93.085016

**Quantum radiation produced by a uniformly accelerating charged particle in thermal random motion.** / Oshita, Naritaka; Yamamoto, Kazuhiro; Zhang, Sen.

Research output: Contribution to journal › Article

*Physical Review D*, vol. 93, no. 8, 085016. https://doi.org/10.1103/PhysRevD.93.085016

}

TY - JOUR

T1 - Quantum radiation produced by a uniformly accelerating charged particle in thermal random motion

AU - Oshita, Naritaka

AU - Yamamoto, Kazuhiro

AU - Zhang, Sen

PY - 2016/4/12

Y1 - 2016/4/12

N2 - We investigate the properties of quantum radiation produced by a uniformly accelerating charged particle undergoing thermal random motion, which originates from the coupling to the vacuum fluctuations of the electromagnetic field. Because the thermal random motion is regarded to result from the Unruh effect, the quantum radiation might give us hints of the Unruh effect. The energy flux of the quantum radiation is negative and smaller than that of Larmor radiation by one order in a/m, where a is the constant acceleration and m is the mass of the particle. Thus, the quantum radiation appears to be a suppression of the classical Larmor radiation. The quantum interference effect plays an important role in this unique signature. The results are consistent with the predictions of a model consisting of a particle coupled to a massless scalar field as well as those of the previous studies on the quantum effect on the Larmor radiation.

AB - We investigate the properties of quantum radiation produced by a uniformly accelerating charged particle undergoing thermal random motion, which originates from the coupling to the vacuum fluctuations of the electromagnetic field. Because the thermal random motion is regarded to result from the Unruh effect, the quantum radiation might give us hints of the Unruh effect. The energy flux of the quantum radiation is negative and smaller than that of Larmor radiation by one order in a/m, where a is the constant acceleration and m is the mass of the particle. Thus, the quantum radiation appears to be a suppression of the classical Larmor radiation. The quantum interference effect plays an important role in this unique signature. The results are consistent with the predictions of a model consisting of a particle coupled to a massless scalar field as well as those of the previous studies on the quantum effect on the Larmor radiation.

UR - http://www.scopus.com/inward/record.url?scp=84963785402&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84963785402&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.93.085016

DO - 10.1103/PhysRevD.93.085016

M3 - Article

AN - SCOPUS:84963785402

VL - 93

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 8

M1 - 085016

ER -