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A shift-symmetric Galileon model in presence of spacetime torsion has been constructed for the first time. This has been realized by localizing (or, gauging) the Galileon symmetry in flat spacetime… Click to show full abstract
A shift-symmetric Galileon model in presence of spacetime torsion has been constructed for the first time. This has been realized by localizing (or, gauging) the Galileon symmetry in flat spacetime in an appropriate manner. We have applied the above model to study the evolution of the universe at a cosmological scale. Interestingly, for a wide class of torsional structures we have shown that the model leads to late time cosmic acceleration. Furthermore, as torsion vanishes, our model reproduces the standard results.
Keywords:
torsion;
time;
shift symmetric;
symmetric galileon;
late time
Journal Title: Physical Review D
Year Published: 2018
Link to full text (if available)
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Journal Title: Physical Review D
Year Published: 2018
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!