ANTONIO PADILLA antonio.padilla@nottingham.ac.uk
Professor of Physics
Multi-Galileons, solitons, and Derrick’s theorem
Padilla, Antonio; Saffin, Paul M.; Zhou, Shuang-Yong
Authors
PAUL SAFFIN PAUL.SAFFIN@NOTTINGHAM.AC.UK
Professor of Physics
Shuang-Yong Zhou
Abstract
The field theory Galilean symmetry, which was introduced in the context of modified gravity, gives a neat way to construct Lorentz-covariant theories of a scalar field, such that the equations of motion contain at most second-order derivatives. Here we extend the analysis to an arbitrary number of scalars, and examine the restrictions imposed by an internal symmetry, focussing in particular on SU(N) and SO(N). This therefore extends the possible gradient terms that may be used to stabilise topological objects such as sigma model lumps.
Citation
Padilla, A., Saffin, P. M., & Zhou, S. (2011). Multi-Galileons, solitons, and Derrick’s theorem. Physical Review D, 83(4), https://doi.org/10.1103/PhysRevD.83.045009
Journal Article Type | Article |
---|---|
Acceptance Date | Feb 1, 2011 |
Publication Date | Feb 14, 2011 |
Deposit Date | Apr 21, 2017 |
Publicly Available Date | Mar 29, 2024 |
Journal | Physical Review D |
Print ISSN | 2470-0010 |
Electronic ISSN | 2470-0029 |
Publisher | American Physical Society |
Peer Reviewed | Peer Reviewed |
Volume | 83 |
Issue | 4 |
DOI | https://doi.org/10.1103/PhysRevD.83.045009 |
Public URL | https://nottingham-repository.worktribe.com/output/707257 |
Publisher URL | https://journals.aps.org/prd/abstract/10.1103/PhysRevD.83.045009 |
Files
1008.0745.pdf
(184 Kb)
PDF
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