PROBES OF THE VACUUM STRUCTURE OF QUANTUM FIELDS IN CLASSICAL BACKGROUNDS

@article{Sriramkumar1999PROBESOT,
  title={PROBES OF THE VACUUM STRUCTURE OF QUANTUM FIELDS IN CLASSICAL BACKGROUNDS},
  author={L. Sriramkumar and Thanu Padmanabhan},
  journal={International Journal of Modern Physics D},
  year={1999},
  volume={11},
  pages={1-34}
}
We compare the different approaches presently available in literature to probe the vacuum structure of quantum fields in classical electromagnetic and gravitational backgrounds. We compare the results from the Bogolubov transformations and the effective Lagrangian approach with the response of monopole detectors (of the Unruh–DeWitt type) in noninertial frames in flat spacetime and in inertial frames in different types of classical electromagnetic backgrounds. We also carry out such a… 
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References

SHOWING 1-10 OF 72 REFERENCES

Quantum Field Theory in Curved Spacetime

These lectures deal with selected aspects of quantum field theory in curved spacetime including the following topics: (1) Quantization of fields on a curved background, particle creation by…

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…

Quantum Field Theory in Curved Spacetime

We review the mathematically rigorous formulation of the quantum theory of a linear field propagating in a globally hyperbolic spacetime. This formulation is accomplished via the algebraic approach,…

The Casimir Effect and Its Applications

The Casimir effect is analyzed. This effect consists of a polarization of the vacuum of quantized fields which arises as a result of a change in the spectrum of vacuum oscillations when the…

Quantum Field Theory in Curved Spacetime and Black Hole Thermodynamics

In this book, Robert Wald provides a pedagogical introduction to the formulation of quantum field theory in curved spacetime. He begins with a treatment of the ordinary one-dimensional quantum…

ON THE RESPONSE OF DETECTORS IN CLASSICAL ELECTROMAGNETIC BACKGROUNDS

We study the response of a detector that is coupled nonlinearly to a quantized complex scalar field in different types of classical electromagnetic backgrounds. Assuming that the quantum field is in…

Quantum field theory on incomplete manifolds

A theory of the scalar quantum field on static manifolds is constructed using the language of Feynman Green’s functions. By means of examples in which the manifolds are parts of Minkowski space, we…

Stationary world lines and the vacuum excitation of noninertial detectors

The stationary world lines, on which quantized field detectors in a vacuum have time-independent excitation spectra, are discussed. They are characterized by the requirement that the geodetic…

Physical interpretation of quantum field theory in noninertial coordinate systems.

In the upper and lower quadrants of flat spacetime, it is possible to introduce a system of coordinates in which the metric is explicitly time dependent, suggesting that quantum theory is covariant only for a subset of the coordinate transformations which are allowed in the classical theory.

On gauge invariance and vacuum polarization

This paper is based on the elementary remark that the extraction of gauge invariant results from a formally gauge invariant theory is ensured if one employs methods of solution that involve only…
...