Black Holes in Non-local Gravity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10495271" target="_blank" >RIV/00216208:11320/24:10495271 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/978-981-99-7681-2_36" target="_blank" >https://doi.org/10.1007/978-981-99-7681-2_36</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-981-99-7681-2_36" target="_blank" >10.1007/978-981-99-7681-2_36</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Black Holes in Non-local Gravity

Popis výsledku v původním jazyce

n this chapter, we present a status report of black hole-like solutions in non-local theories of gravity in which the Lagrangians are at least quadratic in curvature and contain specific non-polynomial (i.e., non-local) operators. In the absence of exact black hole solutions valid in the whole spacetime, most of the literature on this topic focus on approximate and simplified equations of motion, which could provide insights on the full non-linear solutions. Therefore, the largest part of this chapter is devoted to the linear approximation. We present results on stationary metric solutions (including both static and rotating cases) and dynamical spacetimes describing the formation of nonrotating mini black holes by the collapse of null shells. Non-local effects can regularize the curvature singularities in both scenarios, and, in the dynamical case, there exists a mass gap below which the formation of an apparent horizon can be avoided. In the final part, we discuss interesting attempts toward finding non-linear black hole solutions in non-local gravity. Throughout this chapter, instead of focusing on a particular non-local model, we present results valid for large classes of theories (to a feasible extent). This more general approach allows the comparison of similarities and differences of the various types of non-local gravity models.

Název v anglickém jazyce

Black Holes in Non-local Gravity

Popis výsledku anglicky

n this chapter, we present a status report of black hole-like solutions in non-local theories of gravity in which the Lagrangians are at least quadratic in curvature and contain specific non-polynomial (i.e., non-local) operators. In the absence of exact black hole solutions valid in the whole spacetime, most of the literature on this topic focus on approximate and simplified equations of motion, which could provide insights on the full non-linear solutions. Therefore, the largest part of this chapter is devoted to the linear approximation. We present results on stationary metric solutions (including both static and rotating cases) and dynamical spacetimes describing the formation of nonrotating mini black holes by the collapse of null shells. Non-local effects can regularize the curvature singularities in both scenarios, and, in the dynamical case, there exists a mass gap below which the formation of an apparent horizon can be avoided. In the final part, we discuss interesting attempts toward finding non-linear black hole solutions in non-local gravity. Throughout this chapter, instead of focusing on a particular non-local model, we present results valid for large classes of theories (to a feasible extent). This more general approach allows the comparison of similarities and differences of the various types of non-local gravity models.

Druh

C - Kapitola v odborné knize

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název knihy nebo sborníku

Handbook of Quantum Gravity

ISBN

978-981-9976-80-5

Počet stran výsledku

31

Strana od-do

1427-1457

Počet stran knihy

4328

Název nakladatele

Springer

Místo vydání

Singapore

Kód UT WoS kapitoly

—