A Few of Our Publications

The density of virialized clusters as a probe of dark energy                                                                                                                                                      E.A.Paraskevas and L.Perivolaropoulos                                                                                                                                                                                                        ArXiv:2308.07046v1         

Effects of a Late Gravitational Transition on Gravitational Waves and Anticipated Constraints                                                                                                E.A.Paraskevas and L.Perivolaropoulos                                                                                                                                                                                                      DOI: https://doi.org/10.3390/universe9070317

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

Probing dark fluids and modified gravity with gravitational lensing
L. Perivolaropoulos, I. Antoniou and D. Papadopoulos
MNRAS
DOI: 10.1093/mnras/stad1882

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

Stabilizing Spherical Energy Shells with Angular Momentum in Gravitational Backgrounds
I. Antoniou, D. Kazanas, D. Papadopoulos and L. Perivolaropoulos
Int.J.Mod.Phys.D
DOI: 10.1142/S021827182250064X

Gravitational transitions via the explicitly broken symmetron screening mechanism
L. Perivolaropoulos and F. Skara
Phys.Rev.D 106 (2022) 4, 043528
DOI: 10.1103/PhysRevD.106.043528, 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

Observational constraints on the deceleration parameter in a tilted universe
K. Asvesta, L. Kazantzidis, L. Perivolaropoulos and C. G. Tsagas
Mon.Not.Roy.Astron.Soc. 513 (2022) 2, 2394-2406
DOI: 10.1093/mnras/stac922, Supplemental Material

Is the Hubble Crisis Connected with the Extinction of Dinosaurs?
L. Perivolaropoulos
Universe 8 (2022) 5, 263
DOI: 10.3390/universe8050263, Supplemental Material

Constraining a late time transition of G_eff  using low-z galaxy survey data
G. Alestas,  L. Perivolaropoulos and K. Tanidis
Phys.Rev.D 106 (2022) 2, 023526
DOI: 10.1103/PhysRevD.106.023526, Supplemental Material

Late-transition vs smooth H(z) deformation models for the resolution of the Hubble crisis
G. Alestas, D. Camarena, E. Di Valentino, L. Kazantzidis, V. Marra, S. Nesseris and L. Perivolaropoulos
Phys. Rev. D 105, 063538
DOI: 10.1103/PhysRevD.105.063538, Supplemental Material

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

The Hubble Tension, the M Crisis of Late Time H(z) Deformation Models and the Reconstruction of Quintessence Lagrangians
Anastasios Theodoropoulos, Leandros Perivolaropoulos
Universe 2021, 7(8), 300 • Contribution to: 1st Electronic Conference on Universe
DOI: 10.3390/universe7080300, Supplemental Material

Challenges for $\Lambda$CDM: An update
Leandros Perivolaropoulos, Foteini Skara
arXiv:2105.05208

Hints for a gravitational constant transition in Tully-Fisher data
G. Alestas, I. Antoniou and L. Perivolaropoulos
Universe 7 (2021) 366
DOI: 10.3390/universe7100366, Supplemental Material

Late time approaches to the Hubble tension deforming H(z), worsen the growth tension
G. Alestas, L. Perivolaropoulos
Mon.Not.Roy.Astron.Soc. 504 (2021) 3, 3956-3962
DOI: 10.1093/mnras/stab1070, Supplemental Material

A rapid transition of  G_eff  at z_t ≃0.01 as a solution of the Hubble and growth tensions
Valerio Marra, Leandros Perivolaropoulos
Phys.Rev.D 104 (2021) 2, L021303
DOI: 10.1103/PhysRevD.104.L021303

Gravitational redshift/blueshift of light emitted by geodesic test particles, frame-dragging and pericentre-shift effects, in the Kerr–Newman–de Sitter and Kerr–Newman black hole geometries
G.V. Kraniotis
Eur. Phys. J. C (2021) 81:147
DOI: 10.1140/epjc/s10052-021-08911-5

A w – M phantom transition at z_t<0.1 as a resolution of the Hubble tension
G. Alestas, L. Kazantzidis, L. Perivolaropoulos
Phys.Rev.D 103 (2021) 8, 083517
DOI: 10.1103/PhysRevD.103.083517, Supplemental Material

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

Hints for possible low redshift oscillation around the best fit ΛCDM model in the expansion history of the universe
L. Kazantzidis, H. Koo, S. Nesseris, L. Perivolaropoulos, A. Shafieloo
Mon.Not.Roy.Astron.Soc. 501 (2021) 3, 3421-3426
DOI: 10.1093/mnras/staa3866

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

Existence and Stability of Static Spherical Fluid Shells in a Schwarzschild-Rindler-anti-de Sitter Metric
G. Alestas, G.V. Kraniotis, L. Perivolaropoulos
Phys.Rev.D 102 (2020) 10, 104015
DOI: 10.1103/PhysRevD.102.104015, Supplemental Material

H₀ tension, phantom dark energy, and cosmological parameter degeneracies
G. Alestas, L. Kazantzidis, L. Perivolaropoulos
Phys.Rev.D 101 (2020) 12, 123516
DOI: 10.1103/PhysRevD.101.123516, Supplemental Material

Hints of a Local Matter Underdensity or Modified Gravity in the Low z Pantheon data
L. Kazantzidis, L. Perivolaropoulos
Phys.Rev.D 102 (2020) 2, 023520
DOI: 10.1103/PhysRevD.102.023520, Supplemental Material

Tension of the E_G  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

Hints of modified gravity in cosmos and in the lab?
Leandros Perivolaropoulos, Lavrentios Kazantzidis
Int.J.Mod.Phys.D 28 (2019) 05, 1942001, Invited Review for Special Issue on Modified Gravity
DOI: 10.1142/S021827181942001X

Evading Derrick’s theorem in curved space: Static metastable spherical domain wall
G. Alestas, L. Perivolaropoulos
Phys.Rev.D 99 (2019) 6, 064026
DOI: 10.1103/PhysRevD.99.064026, Supplemental Material

The massive Dirac equation in the Kerr-Newman de Sitter and Kerr-Newman black hole spacetimes
G.V. Kraniotis
Journal of Physics Communications 3 (2019) 035026
DOI: 10.1088/2399-6528/ab1046

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

Spinning particle orbits around a black hole in an expanding background
I. Antoniou, D. Papadopoulos, L. Perivolaropoulos
Class.Quant.Grav. 36 (2019) 8, 085002
DOI: 10.1088/1361-6382/ab0fc1

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

σ₈ Tension. Is gravity getting weaker at low z? Observational evidence and theoretical implications
Lavrentios Kazantzidis, Leandros Perivolaropoulos
Invited contribution for the White Paper of COST CA-15117 project “CANTATA” (Cosmology and Astrophysics Network for Theoretical Advances and Training   Actions) “Observational Discriminators” section.
DOI: 10.1007/978-3-030-83715-0_33, arXiv: 1907.03176, 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

Evolution of the fσ₈ tension with the Planck15/ΛCDM determination and implications for modified gravity theories
L. Kazantzidis, L. Perivolaropoulos
Phys.Rev.D 97 (2018) 10, 103503
DOI: 10.1103/PhysRevD.97.103503, Supplemental Material

Gravitational Interactions of Finite Thickness Global Topological Defects with Black Holes
L. Perivolaropoulos
Phys.Rev.D 97 (2018) 12, 124035
DOI: 10.1103/PhysRevD.97.124035, Supplemental Material

Consistency of modified gravity with a decreasing  G_eff (z) in a ΛCDM background
Radouane Gannouji, Lavrentios Kazantzidis, Leandros Perivolaropoulos, David Polarski
Phys.Rev.D 98 (2018) 10, 104044
DOI: 10.1103/PhysRevD.98.104044