Penrose junction conditions with Lambda: geometric insights into low-regularity metrics for impulsive gravitational waves

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10456328" target="_blank" >RIV/00216208:11320/22:10456328 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=6L4_IZ8YTw" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=6L4_IZ8YTw</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10714-022-02977-6" target="_blank" >10.1007/s10714-022-02977-6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Penrose junction conditions with Lambda: geometric insights into low-regularity metrics for impulsive gravitational waves

Popis výsledku v původním jazyce

Impulsive gravitational waves in Minkowski space were introduced by Roger Penrose at the end of the 1960s, and have been widely studied over the decades. Here we focus on nonexpanding waves which later have been generalized to impulses traveling in all constant-curvature backgrounds, i.e., the (anti-)de Sitter universe. While Penrose&apos;s original construction was based on his vivid geometric &quot;scissors-and-paste&quot; approach in a flat background, until recently a comparably powerful visualization and understanding has been missing in the case with a cosmological constant Lambda not equal 0. Here we review the original Penrose construction and its generalization to non-vanishing Lambda in a pedagogical way, as well as the recently established visualization: A special family of global null geodesics defines an appropriate comoving coordinate system that allows to relate the distributional to the continuous form of the metric.

Název v anglickém jazyce

Penrose junction conditions with Lambda: geometric insights into low-regularity metrics for impulsive gravitational waves

Popis výsledku anglicky

Impulsive gravitational waves in Minkowski space were introduced by Roger Penrose at the end of the 1960s, and have been widely studied over the decades. Here we focus on nonexpanding waves which later have been generalized to impulses traveling in all constant-curvature backgrounds, i.e., the (anti-)de Sitter universe. While Penrose&apos;s original construction was based on his vivid geometric &quot;scissors-and-paste&quot; approach in a flat background, until recently a comparably powerful visualization and understanding has been missing in the case with a cosmological constant Lambda not equal 0. Here we review the original Penrose construction and its generalization to non-vanishing Lambda in a pedagogical way, as well as the recently established visualization: A special family of global null geodesics defines an appropriate comoving coordinate system that allows to relate the distributional to the continuous form of the metric.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

<a href="/cs/project/GA20-05421S" target="_blank" >GA20-05421S: Přesné prostoročasy v Einsteinově teorii, kvadratické gravitaci a dalších zobecněních</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

General Relativity and Gravitation

ISSN

0001-7701

e-ISSN

1572-9532

Svazek periodika

54

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

24

Strana od-do

96

Kód UT WoS článku

000851253300001

EID výsledku v databázi Scopus

2-s2.0-85137559351