The Unruh effect and its applications

  title={The Unruh effect and its applications},
  author={Lu{\'i}s C. B. Crispino and Atsushi Higuchi and George Matsas},
  journal={Reviews of Modern Physics},
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 important in its own right and as a way to understand the phenomenon of particle emission from black holes and cosmological horizons. The Unruh effect is reviewed here with particular emphasis on its applications. A number of recent developments are also commented on and some controversies are discussed… 
On the Possibility of Measuring the Unruh Effect
There is a persistent state of confusion regarding the nature of the Unruh effect. We will argue that, in contrast to some interpretations thereof, the effect does not represent any novel physics and
Classical analog of the Unruh effect
In the Unruh effect an observer with constant acceleration perceives the quantum vacuum as thermal radiation. The Unruh effect has been believed to be a pure quantum phenomenon, but here we show
Note on the Unruh Effect
It was suggested by Unruh that a uniformly accelerated detector in vacuum would perceive a noise with a thermal distribution. We obtain a representation of solutions of the wave equation in two
Key points for understanding of Unruh and Hawking effects
The present paper stress on the distinction between the two idealizations~-- eternal (primordial) black hole and a black hole formed in a process of gravitation collapse. Such a distinction is an
Proposal for Observing the Unruh Effect using Classical Electrodynamics.
A simple experiment reachable under present technology whose result may be directly interpreted in terms of the Unruh thermal bath is proposed, and standard classical electrodynamics is used to anticipate its output and fulfill the goal.
The Unruh effect and oscillating neutrinos
We give an overview of the issues and ambiguities associated with the Unruh effect, and argue that, as well as a very interesting phenomenon, it can also be used as a probe of fundamental physics. In
Macroscopic aspects of the Unruh effect
Macroscopic concepts pertaining to the Unruh effect are elaborated and used to clarify its physical manifestations. Based on a description of the motion of accelerated, spatially extended
On the incompleteness of the Unruh fermion modes in the Minkowski space
It has been shown that boost modes of two-dimensional fermions on a light cone are expressed in terms of the Dirac delta function of a complex argument. Therefore, the decomposition of integrals over


Hawking-like effects and Unruh-like effects: toward experiments ?
The Hawking effect and the Unruh effect are two of the most important predictions in the theoretical physics of the last quarter of the 20th century. In parallel to the theoretical investigations
Does the Unruh effect exist?
It is shown that quantization on the Fulling modes presupposes that the field vanishes on the spatial boundaries of the Rindler manifold. For this reason, Rindler space is physically unrelated with
The Unruh effect revisited
We give a complete and rigorous proof of the Unruh effect, in the following form. We show that the state of a two-level system, uniformly accelerated with proper acceleration a and initially coupled
The spinor field in Rindler spacetime: an analysis of the Unruh effect
We analyse the quantization procedure of the spinor field in the Rindler spacetime, showing the boundary conditions that should be imposed to the field, in order to have a well posed theory. We then
Considerations on the Unruh effect: causality and regularization
This paper is motivated by the observation that calculations of the Unruh effect based on idealized particle detectors are usually made in a way that involves integrations along the entire detector
Decay of accelerated protons and the existence of the Fulling-Davies-Unruh effect.
The weak decay of uniformly accelerated protons in the context of standard quantum field theory is investigated by considering the Fulling-Davies-Unruh effect to achieve equality in inertial and coaccelerated frames.
Notes on spacetime thermodynamics and the observer dependence of entropy
Because of the Unruh effect, accelerated and inertial observers differ in their description of a given quantum state. The implications of this effect are explored for the entropy assigned by such
Quantum Fields in Curved Space
This book presents a comprehensive review of the subject of gravitational effects in quantum field theory. Although the treatment is general, special emphasis is given to the Hawking black hole
Background thermal contributions in testing the Unruh effect.
  • Costa, Matsas
  • Physics
    Physical review. D, Particles and fields
  • 1995
The final conclusion that the background thermal bath does not contribute substantially in the depolarization of electrons at LEP is the same as previous conclusions.
Comment on “Boundary conditions in the Unruh problem”
The five authors of [1] have offered a variety of arguments that “principles of quantum field theory as of now do not give convincing arguments in favor of a universal thermal response of detectors