Valencia Villegas Juan Mauricio

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  PhD Student

Research Avisor: Sergey Mironov

My research interests include mathematical aspects of modifications to Einstein gravity for early and late time cosmology. In particular, I currently work with degenerate scalar tensor theories (DHOST), subluminal and luminal cases, as well as the issues with UV completions.

Selected publications:

1. Mironov, S.; Valencia-Villegas, M. (2023). "Stability of nonsingular Cosmologies in Galileons with Torsion. A No-Go for eternal subluminality". Physical Review D.109 (2024) 4. arXiv: 2307.06929 [hep-th]. doi: 10.1103/PhysRevD.109.044073.

2. Mironov, S.; Valencia-Villegas, M. (2023). "Quartic Horndeski Cartan theories in a FLRW Universe". Physical Review D. 108 (2023) 2, 024057. arXiv: 2304.04722 [hep-th]. doi: 10.1103/PhysRevD.108.024057.

3. Lopez-Sarrion, J.; Valencia Villegas M. (2023). "Ghost condensation and subluminal propagation on low derivative backgrounds". doi: 10.1088/1402-4896/acc48d.

4. Mironov, S.; Shtennikova, A.; Valencia-Villegas, M. (2024). "Reviving Horndeski after GW170817 by Kaluza-Klein compactifications". Physics Letters B. 858 (2024) 139058. arXiv: 2405.02281 [hep-th]. doi: 10.1016/j.physletb.2024.139058.

Publications affiliated with ITMP:

1. Mironov, S.; Shtennikova, A.; Valencia-Villegas, M. (2024). "Higher derivative SVT theories from Kaluza-Klein reductions of Horndeski theory". arXiv: 2408.04626 [hep-th].
2. Mironov, S.; Valencia-Villegas, M. (2024). "Healthy Horndeski cosmologies with torsion". Journal of Cosmology and Astroparticle Physics. 07(2024)030. arXiv: 2405.08673 [gr-qc]. doi: 10.1088/1475-7516/2024/07/030.
3. Mironov, S.; Shtennikova, A.; Valencia-Villegas, M. (2024). "Reviving Horndeski after GW170817 by Kaluza-Klein compactifications". Physics Letters B. 858 (2024) 139058. arXiv: 2405.02281 [hep-th]. doi: 10.1016/j.physletb.2024.139058.
4. Valencia Villegas, M. (2024). "Quartic Horndeski-Cartan theories: a review on the stability of nonsingular cosmologies". PoS ICPPCRubakov. 2023 (2024) 455. doi: 10.22323/1.455.0033. 
5. Mironov, S.; Valencia-Villegas, M. (2023). "Quartic Horndeski Cartan theories in a FLRW Universe". Physical Review D. 108 (2023) 2, 024057. arXiv: 2304.04722 [hep-th]. doi: 10.1103/PhysRevD.108.024057.
6. Mironov, S.; Valencia-Villegas, M. (2023). "Stability of nonsingular Cosmologies in Galileons with Torsion. A No-Go for eternal subluminality". Physical Review D.109 (2024) 4. arXiv: 2307.06929 [hep-th]. doi: 10.1103/PhysRevD.109.044073.

All publications