2020/05/07 by Ayan Banerjee, Ksh. Newton Singh, Banerjee, Ayan +1 · 2 citations
Physics and Astronomy · #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #gr-qc
paper · pdf · doi:10.48550/arxiv.2005.04028
13 pages, 7 figures, typos corrected, references added
arxiv created 2020/05/13 · arxiv updated 2020/05/14
This work is devoted on the recently introduced Einstein-Gauss-Bonnet gravity in four dimensions. The theory can bypass the Lovelock's theorem and avoids Ostrogradsky instability. The integrated part of this theory is the GB term gives rise to a non-trivial contribution to the gravitational dynamics in the limit D → 4. Our main interest is to explore a class of static and spherically symmetric compact objects made of strange matter in the color flavor locked (CFL) phase, in which all three quark flavors participate to pairing symmetrically. It is therefore natural to ask for compact objects in 4D EGB gravity since, compact stars signatures may be the test-bed to compare new models to the Einstein gravity; on the other hand, this could shed new light on the possible presence of CFL phase in compact stars. This feature may be relevant in view of recent observations claiming the existence of stable compact quark stars (hybrid neutron stars or strange stars).