Semiclassical approach to the decay of protons in circular motion under the influence of gravitational fields

  title={Semiclassical approach to the decay of protons in circular motion under the influence of gravitational fields},
  author={Douglas Fregolente and George E. A. Matsas and Daniel A. T. Vanzella},
  journal={Physical Review D},
We investigate the possible decay of protons in geodesic circular motion around neutral compact objects. Weak and strong decay rates and the associated emitted powers are calculated using a semiclassical approach. Our results are discussed with respect to distinct ones in the literature, which consider the decay of accelerated protons in electromagnetic fields. A number of consistency checks are presented along the paper. 

Figures from this paper

Lifetime and decay of unstable particles in strong gravitational fields

We consider here the decay of unstable particles in geodesic circular motion around compact objects. For the neutron, in particular, strong and weak decay are calculated by means of a semiclassical

Synchrotron scalar radiation from a source in ultrarelativistic circular orbits around a Schwarzschild black hole

Using the framework of quantum field theory in curved spacetime, I analyze the synchrotron scalar radiation emitted by a source orbiting a Schwarzschild black hole in both stable and unstable

Can a charged decaying particle serve as an ideal clock in the presence of a magnetic field

We investigate a model of a supposedly ideal clock based on the decay rate of a charged particle in circular motion in a constant magnetic field. We show that the time measured by an ideal clock

Searching for curvature pion radiation from protons in strongly magnetized pulsars

By using rather conservative estimates based on the simplest polar cap model, we search the ATNF Pulsar Catalogue for strongly magnetized stars that could accelerate relativistic protons up to the

Source coupled to the massive scalar field orbiting a stellar object

In this work we analyze, using quantum field theory at tree level, the massive scalar radiation emitted by a source in uniform circular motion in Minkowski spacetime, assuming Newtonian gravitation,

The Unruh effect and its applications

It has been 30 years since the discovery of the Unruh effect. It has played a crucial role in our understanding that the particle content of a field theory is observer dependent. This effect is



Decay of accelerated particles

We study how the decay properties of particles are changed by acceleration. It is shown that under the influence of acceleration (1) the lifetime of particles is modified and (2) new processes (such

Analytic evaluation of the decay rate for an accelerated proton

We evaluate the decay rate of the uniformly accelerated proton. We obtain an analytic expression for the inverse beta decay process caused by the acceleration. We evaluate the decay rate both from

Scalar radiation emitted from a source rotating around a black hole

We analyse the scalar radiation emitted from a source rotating around a Schwarzschild black hole using the framework of quantum field theory at the tree level. We show that for relativistic circular

Semiclassical approach to black hole absorption of electromagnetic radiation emitted by a rotating charge

We consider an electric charge, minimally coupled to the Maxwell field, rotating around a Schwarzschild black hole. We investigate how much of the radiation emitted from the swirling charge is

Quantum effects of the interaction of elementary particles with an intense electromagnetic field

The characteristic value of the electromagnetic field intensity in quantum electrodynamics is studied and presented. General remarks are given on processes in an intense electromagnetic field and

Geodesic synchrotron radiation

This paper presents the results and methods of computing the high- frequency radiation emitted by freely falling particles moving in circular geodesic orbits in a spherically symmetric gravitational

Problems of intense external-field intensity in quantum electrodynamics

This paper investigates pair production for the case when the field ceases to produce pairs, so that the concepts of vacuum in the remote past or future are well defined. Processes in a constant

Self-force on a particle in orbit around a black hole

  • Burko
  • Physics
    Physical review letters
  • 2000
The radial component of the self-force to be repulsive or attractive, depending on the orbit, is found, in particular near the black hole, where general-relativistic effects are strongest, and for fast motion.

Scalar synchrotron radiation in the Schwarzschild–anti–de Sitter geometry

We present a complete relativistic analysis for the scalar radiation emitted by a particle in circular orbit around a Schwarzschild\char21{}anti\char21{}de Sitter (AdS) black hole. If the black hole