Multi-Galileons, solitons, and Derrick's theorem

Journal Article · Tue Feb 15 00:00:00 EST 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.045009· OSTI ID:21505015

Padilla, Antonio; Saffin, Paul M; Shuangyong, Zhou ^[1]

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1. School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD (United Kingdom)

Galileon models, which were developed in the context of modified gravity, give a class of Lagrangians containing derivative interactions without introducing higher order derivatives in the equations of motion. Here we extend the analysis to an arbitrary number of scalars, and examine the restrictions imposed by an internal symmetry, focusing in particular on SU(N) and SO(N). This therefore extends the possible gradient terms that may be included when constructing topological objects such as sigma model lumps.

• OSTI ID: 21505015
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 4; Other Information: DOI: 10.1103/PhysRevD.83.045009; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
EQUATIONS OF MOTION
GRAVITATION
INTERACTIONS
LAGRANGIAN FUNCTION
SIGMA MODEL
SO GROUPS
SOLITONS
SU GROUPS
SYMMETRY
TOPOLOGY
BOSON-EXCHANGE MODELS
DIFFERENTIAL EQUATIONS
EQUATIONS
FUNCTIONS
LIE GROUPS
MATHEMATICAL MODELS
MATHEMATICS
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE MODELS
PERIPHERAL MODELS
QUASI PARTICLES
SYMMETRY GROUPS