2019
DOI: 10.48550/arxiv.1905.13439
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Astrophysics in Strong Electromagnetic Fields and Laboratory Astrophysics

Sang Pyo Kim

Abstract: Recent observations of gravitational waves from binary mergers of black holes or neutron stars and the rapid development of ultra-intense lasers lead strong field physics to a frontier of new physics in the 21st century. Strong gravity phenomena are most precisely described by general relativity, and lasers that are described by another most precisely tested quantum electrodynamics (QED) can be focused into a tiny area in a short period through the chirped pulse amplification and generate extremely high intens… Show more

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Cited by 4 publications
(5 citation statements)
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“…From the experimental side, this particle production effect is also of special interest since it may not be far from being experimentally detected in high intensity lasers [17], and in beam-beam collisions [18]. This effect is also very important in astrophysical [19,20] and cosmological scenarios [21][22][23], and in non-equilibrium processes induced by strong fields [24]. In this context, the most important physical local expectation value is the electric current j µ , which also possesses ultraviolet divergences and has to be renormalized in a proper way.…”
Section: Introductionmentioning
confidence: 99%
“…From the experimental side, this particle production effect is also of special interest since it may not be far from being experimentally detected in high intensity lasers [17], and in beam-beam collisions [18]. This effect is also very important in astrophysical [19,20] and cosmological scenarios [21][22][23], and in non-equilibrium processes induced by strong fields [24]. In this context, the most important physical local expectation value is the electric current j µ , which also possesses ultraviolet divergences and has to be renormalized in a proper way.…”
Section: Introductionmentioning
confidence: 99%
“…As expected the expectation values in the Hadamard in-vacuum state acquire quadratic ultraviolet divergences; see Eqs. (33), (35) and (36). To obtain a finite result, we have applied the adiabatic regularization scheme.…”
Section: Gravitational Backreactionmentioning
confidence: 99%
“…Creation of pairs in a strong electric field background in the flat spacetime is a well known nonperturbative phenomenon in quantum field theory which is referred to as the Schwinger effect [28][29][30]; see [31,32] for introduction. Possibility of existing strong electromagnetic fields in the early universe [33] motivates studying the Schwinger effect in the cosmological context [34]; see [35] for a recent review and references. Due to the cosmological event horizon dS emits particles [10,11,19,[36][37][38][39][40][41][42][43][44] which is known as the Gibbons-Hawking radiation [45,46].…”
Section: Introductionmentioning
confidence: 99%
“…The Schwinger effect has been extensively studied for (near-) extremal Reissner-Nordström (RN) black holes [4,5], Kerr-Newman (KN) black holes [6], dyonic KN black holes [7] (for review and references, see Ref. [8]). The Schwinger fermion production has also been studied for charged black holes in the (A)dS space [9][10][11].…”
Section: Introductionmentioning
confidence: 99%