[HTML][HTML] The dark side of the torsion: dark energy from propagating torsion
D Benisty, EI Guendelman, A van de Venn… - The European Physical …, 2022 - Springer
The European Physical Journal C, 2022•Springer
An extension to the Einstein–Cartan (EC) action is discussed in terms of cosmological
solutions. The torsion incorporated in the EC Lagrangian is assumed to be totally anti-
symmetric, represented by a time-like axial vector\(S^\mu\). The dynamics of torsion is
invoked by a novel kinetic term. Here we show that this kinetic term gives rise to dark energy,
while the quadratic torsion term, emanating from the EC part, represents a stiff fluid that
leads to a bouncing cosmology solution. A constraint on the bouncing solution is calculated …
solutions. The torsion incorporated in the EC Lagrangian is assumed to be totally anti-
symmetric, represented by a time-like axial vector\(S^\mu\). The dynamics of torsion is
invoked by a novel kinetic term. Here we show that this kinetic term gives rise to dark energy,
while the quadratic torsion term, emanating from the EC part, represents a stiff fluid that
leads to a bouncing cosmology solution. A constraint on the bouncing solution is calculated …
Abstract
An extension to the Einstein–Cartan (EC) action is discussed in terms of cosmological solutions. The torsion incorporated in the EC Lagrangian is assumed to be totally anti-symmetric, represented by a time-like axial vector. The dynamics of torsion is invoked by a novel kinetic term. Here we show that this kinetic term gives rise to dark energy, while the quadratic torsion term, emanating from the EC part, represents a stiff fluid that leads to a bouncing cosmology solution. A constraint on the bouncing solution is calculated using cosmological data from different epochs.
Springer
以上显示的是最相近的搜索结果。 查看全部搜索结果