3 papers
hep-th2026
Extended Thermodynamics and Renyi Entropy Beyond Fixed Central Charge
Chatchai Promsiri, Phuwadon Chunaksorn, Ratchaphat Nakarachinda +1
An outstanding problem in the framework of conformal thermodynamics concerns the interpretation of variations in the central charge . In this paper, we construct a novel central…
gr-qc2025
Optical Signatures of q-deformed solution in Einstein-Maxwell-dilaton Gravity
Chawit Sakkawattana, Chatchai Promsiri, Supakchai Ponglertsakul
We consider null geodesics in the background of spherically symmetric object in Einstein-Maxwell-Dilaton (EMD) theory with coupling function . The spherical solut…
gr-qc2025
Thermodynamics of Black Holes with Rényi Entropy from Classical Gravity
Ratchaphat Nakarachinda, Chatchai Promsiri, Lunchakorn Tannukij +1
The nonextensive nature of black holes is one of the most intriguing discoveries. In fact, the black hole entropy is a nonextensive quantity that scales by its surface area at the…