Dr. Foteini Skara


Personal Information


Research Interests

I am interested in a variety of topics in theoretical physics and cosmology, including general relativity, gravity theories, dark energy, inflation, and primordial density perturbations. My research focuses on cosmological observational constraints on modified gravity theories. Cosmological data from a wide range of cosmological observational probes allows us to test theories about the growth of structures in our universe.

Short Curriculum Vitae


2018 – 2022       
Ph.D. in Physics
                               Supervisor: Prof. Leandros Perivolaropoulos
                               Department of Physics, University of Ioannina
2015 – 2018        M.Sc. in School of Science and Technology Physics
                               M.Sc. Thesis: “Gravitational Waves and Cosmology”
                               Thesis Advisor: Prof. Leandros Perivolaropoulos
                               Hellenic Open University
1987 – 1993        B.Sc. in Physics
                               Grade: 7.47/10.00
                               Aristotle University of Thessaloniki


Greek       Native 

English    Good Speaking, reading and writing

Computer Skills

Operating Systems     Windows 
Programming               Wolfram Mathematica
Applications                 Microsoft Office, LaTeX 

Work Experience

2007 – Present    Teaching, Middle/High School of Chrysoupoli Ministry of Education
1993 – 2006         Teaching, Tutorial Courses

Publication Record

For the full list of my publications please visit the inspirehep database.

A reanalysis of the latest SH0ES data for H0: Effects of new degrees of freedom on the Hubble tension
L. Perivolaropoulos and F. Skara
ArXiv: 2208.11169, Supplemental Material

Gravitational transitions via the explicitly broken symmetron screening mechanism
L. Perivolaropoulos and F. Skara
arXiv: 2203.10374, Supplemental Material

Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies
E. Di Valentino et al., Contribution to the 2022 Snowmass Summer Study
JHEAp 34 (2022) 49-211
DOI: 10.1016/j.jheap.2022.04.002

Hubble tension or a transition of the Cepheid SnIa calibrator parameters?
Leandros Perivolaropoulos, Foteini Skara
Phys.Rev.D 104 (2021) 12, 123511
DOI: 10.1103/PhysRevD.104.123511, Supplemental Material

Challenges for CDM: An update
Leandros Perivolaropoulos, Foteini Skara

Weak gravity on a ΛCDM background
Radouane Gannouji, Leandros Perivolaropoulos, David Polarski, Foteini Skara
Phys.Rev.D 103 (2021) 6, 063509
DOI: 10.1103/PhysRevD.103.063509

Scalar tachyonic instabilities in gravitational backgrounds: Existence and growth rate
L. Perivolaropoulos, F. Skara
Phys.Rev.D 102 (2020) 10, 104034
DOI: 10.1103/PhysRevD.102.104034, Supplemental Material

Tension of the EG  statistic and redshift space distortion data with the Planck-ΛCDM model and implications for weakening gravity
F. Skara, L. Perivolaropoulos
Phys.Rev.D 101 (2020) 6, 063521
DOI: 10.1103/PhysRevD.101.063521, Supplemental Material

Constraining power of cosmological observables: blind redshift spots and optimal ranges
L. Kazantzidis, L. Perivolaropoulos, F. Skara
Phys.Rev.D 99 (2019) 6, 063537
DOI: 10.1103/PhysRevD.99.063537, Supplemental Material

Reconstructing a Model for Gravity at Large Distances from Dark Matter Density Profiles
L. Perivolaropoulos, F. Skara
Phys.Rev.D 99 (2019) 12, 124006
DOI: 10.1103/PhysRevD.99.124006, Supplemental Material

Primordial Power Spectra of Cosmological Fluctuations with Generalized Uncertainty Principle and Maximum Length Quantum Mechanics
F. Skara, L. Perivolaropoulos
Phys.Rev.D 100 (2019) 12, 123527
DOI: 10.1103/PhysRevD.100.123527, Supplemental Material