299 citations · 465 across the 33 of their papers we have counts for
19 papers · 1 filter
From Cosmology to Cosmonomy
Emmanuel N. Saridakis
For most of its history, cosmology was a qualitatively constrained discourse on the universe, shaped by limited observational access and the absence of global dynamical laws. This…
Topological and optical signatures of modified black-hole entropies
Ankit Anand, Kimet Jusufi, Spyros Basilakos +1
We investigate how deviations from the Bekenstein-Hawking entropy modify black-hole spacetimes through the recently proposed entropy-geometry correspondence. For four representativ…
Primordial black hole dark matter from ultra-slow-roll inflation in Horndeski gravity
Despina Totolou, Theodoros Papanikolaou, Emmanuel N. Saridakis
Primordial black holes (PBHs) provide a well-motivated non-particle candidate for dark matter, requiring an enhancement of curvature perturbations on small inflationary scales cons…
Higgs-like inflation in scalar-torsion gravity in light of ACT-SPT-DESI constraints
Nitesh Kumar, Giovanni Otalora, Rodrigo Reyes +3
We study Higgs-like inflation in the framework of scalar-torsion gravity, focusing on the general class of theories in which gravitation is mediated by torsion rather than…
Bohmian Quantum Cosmology from the Wheeler-DeWitt Equation
Spyros Basilakos, Gerasimos Kouniatalis, Emmanuel N. Saridakis +1
We construct a Bohmian quantum cosmological model for a spatially flat Friedmann Robertson Walker universe filled with a single scalar field whose potential provides a unified desc…
Decoupling perturbations from background in gravity: the square-root correction and the impact on the tension
Chunyu Li, Xin Ren, Yuhang Yang +2
We investigate a perturbation-level modification of symmetric teleparallel gravity of the form and assess its potential to ease the tension. The square-…
Baryogenesis constraints on generalized mass-to-horizon entropy
Giuseppe Gaetano Luciano, Emmanuel N. Saridakis
We investigate the generation of the baryon asymmetry within the cosmological framework based on a generalized mass-to-horizon entropy. This entropy, recently proposed as a power-l…
Probing the sound speed and clustering of dark energy
Yuhang Yang, Qingqing Wang, Xin Ren +2
Recent Dark Energy Spectroscopic Instrument (DESI) observations favor a dynamical dark energy component with a time-varying equation-of-state, potentially crossing the cosmological…
Effective matter sectors from modified entropies
Ankit Anand, Sahil Devdutt, Kimet Jusufi +1
We present a general formalism linking modified entropy functions directly to a modified spacetime metric and, subsequently, to an effective matter sector of entropic origin. In pa…
Cosmological tensions in the era of precision cosmology: Insights from Tensions in Cosmology 2025
Eleonora Di Valentino, Jackson Levi Said, Emmanuel N. Saridakis
The ``Tensions in Cosmology'' series of conferences has been established as one of the main venues where the cosmological community collectively assesses the cracks in the concorda…
Inflation from a generalized exponential plateau: towards extra suppressed tensor-to-scalar ratios
Gerasimos Kouniatalis, Emmanuel N. Saridakis
We investigate a standard minimally-coupled scalar-field inflationary scenario, which is based on a new potential, with suitably generalized plateau features, that leads to extra s…
Is Dark Energy an Effective Manifestation of Non-equilibrium Thermodynamics? -- Insights from DESI
Sauvik Bhattacharjee, Sudip Halder, Jaume de Haro +2
We investigate the background cosmological expansion on the onset of cosmological homogeneous matter creation scenario, a dynamical dark matter approach (), and…
Constraints on Barrow and Tsallis Holographic Dark Energy from DESI DR2 BAO data
Giuseppe Gaetano Luciano, Andronikos Paliathanasis, Emmanuel N. Saridakis
Barrow and Tsallis Holographic Dark Energy (HDE) are two recently proposed extensions of the standard HDE framework, incorporating generalized corrections to horizon entropy throug…
Quantum circuit simulation of black hole evaporation and Maxwell demon interpretation
H. Hadi, Amin Rezaei Akbarieh, Emmanuel N. Saridakis
We suggest a quantum circuit model which simulates the black-hole evaporation process. In particular, Almheiri-Marolf-Polchinski-Sully (AMPS) paradox and the ER=EPR correspondence…
Barrow and Tsallis entropies after the DESI DR2 BAO data
Giuseppe Gaetano Luciano, Andronikos Paliathanasis, Emmanuel N. Saridakis
Modified cosmology based on Barrow entropy arises from the gravity-thermodynamics conjecture, in which the standard Bekenstein-Hawking entropy is replaced by the Barrow entropy of…
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
Interacting dark energy after DESI DR2: a challenge for CDM paradigm?
Supriya Pan, Sivasish Paul, Emmanuel N. Saridakis +1
We investigate the scenario of interacting dark energy through a detailed confrontation with various observational datasets. We quantify the interaction in a general way, through t…
Modified cosmology though spacetime thermodynamics and generalized mass-to-horizon entropy
Spyros Basilakos, Andreas Lymperis, Maria Petronikolou +1
In this work we apply the gravity-thermodynamics approach for the case of generalized mass-to-horizon entropy, which is a two-parameter extension of Bekenstein-Hawking entropy that…
Equivalence of cosmology with quintom-like scenario: the phantom field as effective realization of the non-trivial connection
Spyros Basilakos, Andronikos Paliathanasis, Emmanuel N. Saridakis
We show that cosmology with a non-trivial connection, namely the Connection II of the literature, is dynamically equivalent with a quintom-like model. In particular, we show…