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Title: Caustics for spherical waves

Journal Article · · Physical Review D
 [1];  [2]
  1. Case Western Reserve Univ., Cleveland, OH (United States); Imperial College, London (United Kingdom)
  2. Univ. of Valencia (Spain); Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics (KICP)

We study the development of caustics in shift-symmetric scalar field theories by focusing on simple waves with an S O ( p ) -symmetry in an arbitrary number of space dimensions. We show that the pure Galileon, the DBI–Galileon, and the extreme-relativistic Galileon naturally emerge as the unique set of caustic-free theories, highlighting a link between the caustic-free condition for simple S O ( p ) -waves and the existence of either a global Galilean symmetry or a global (extreme-)relativistic Galilean symmetry.

Research Organization:
Case Western Reserve Univ., Cleveland, OH (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
SC0009946
OSTI ID:
1423957
Alternate ID(s):
OSTI ID: 1346094
Journal Information:
Physical Review D, Vol. 95, Issue 6; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 22 works
Citation information provided by
Web of Science

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Cited By (5)

A new scalar–tensor realization of Hořava–Lifshitz gravity journal March 2019
Recovering P ( X ) from a canonical complex field journal November 2018
Extended cuscuton: formulation journal December 2018
Linear stability analysis of hairy black holes in quadratic degenerate higher-order scalar-tensor theories: Odd-parity perturbations journal July 2019
Extended Cuscuton: Formulation text January 2018

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