Principal investigator: Anđelo Samsarov
PI's Host institution: Ruđer Bošković Institute
Project duration: 01/03/2021 - 09/07/2025
 

Project Summary

Black holes are predicted by the theory of general relativity as a result of a gravitational collapse of massive astrophysical objects. Among other interesting properties of black holes is a property that they exist in a state of constant arousal. Indeed, realistic black holes can never be fully described by their basic parameters, as they are always in a state of perturbation.

Black hole perturbation is followed by a ringdown phase which is dominated by quasinormal modes (QNM). These modes may provide key signature of the gravitational waves.

During the ringdown phase, black holes gradually relax from the initial perturbation by emitting gravitational waves and presumed Hawking radiation. Notably, the presence of a deformed spacetime structure may distort this signal. In order to account for such effects, in this project we plan to utilise the methods of noncommutative geometry (NC) in order to construct and devise appropriate physical models which would be able to deal with new circumstances. The aim of this project is to invetigate the scalar, Dirac, vector and gravitational QNMs resulting from perturbations of realistic 4-dimensional black holes in a presence of quantized spacetime. The same setting of NC geometry we plan to apply in studying the impact of deformation on both the symmetry and the dispersion relations as revealed in a propagation of high energy gamma rays resulting from distant gamma ray bursts.

Project Members

Ana Bokulić

University of Zagreb, Croatia

Kumar Sankar Gupta

Saha Institute of Nuclear Physics, India

Nikola Herceg

RBI, Croatia

Tajron Jurić

RBI, Croatia

Nikola Konjik

IPB, Serbia

Naveena Kumara

RBI, Croatia

Salvatore Mignemi

Università degli Studi di Cagliari, Italy

Filip Požar

RBI, Croatia

Anđelo Samsarov (PI)

RBI, Croatia

Ivica Smolić

University of Zagreb, Croatia

List of Publications

Black hole thermodynamics in the presence of nonlinear electromagnetic fields
Ana Bokulić, Tajron Jurić, Ivica Smolić
Phys. Rev. D 103, 124059 (2021)
https://arxiv.org/abs/2102.06213

Observables in Quantum Mechanics and the Importance of Self-adjointness
Tajron Jurić
Universe 2022, 8, 129
https://arxiv.org/abs/2103.01080

Nonlinear electromagnetic fields in strictly stationary spacetimes
Ana Bokulić, Tajron Jurić, Ivica Smolić
Phys. Rev. D 105, 024067 (2022)
https://arxiv.org/abs/2111.10387

Arrival time from the general theory of quantum time distributions
Tajron Jurić, Hrvoje Nikolić
Eur. Phys. J. Plus 137 (2022) 5, 63
https://arxiv.org/abs/2107.08777

Constraints on singularity resolution by nonlinear electrodynamics
Ana Bokulić, Tajron Jurić, Ivica Smolić
Phys. Rev. D 106, 064020 (2022)
https://arxiv.org/abs/2206.07064

Passive quantum measurement: Arrival time, quantum Zeno effect and gambler's fallacy
Tajron Jurić, Hrvoje Nikolić
Accepted for publication in Fortschritte der Physik
https://arxiv.org/abs/2207.09140

Propagation of spinors on a noncommutative spacetime: equivalence of the formal and the effective approach
Marija Dimitrijević-Ćirić, Nikola Konjik, Andjelo Samsarov
Eur. Phys. J. C 83 (2023) 387
https://arxiv.org/abs/2208.06069

Noncommutativity and logarithmic correction to the black hole entropy
Kumar S. Gupta, Tajron Jurić, Anđelo Samsarov, Ivica Smolić
JHEP 02 (2023) 060
https://arxiv.org/abs/2209.07168

Noncommutative correction to the entropy of charged BTZ black hole
Tajron Jurić, Filip Požar
Symmetry 2023, 15(2), 417
https://arxiv.org/abs/2212.06496

Generalizations and challenges for the spacetime block-diagonalization
Ana Bokulić, Ivica Smolić
Class. Quantum Grav. 40 (2023) 165010
https://arxiv.org/abs/2303.00764

Noncommutative scalar field theory in a curved background: Duality between noncommutative and effective commutative description
Marija Dimitrijević Ćirić, Nikola Konjik, Andjelo Samsarov
Int.J.Mod.Phys.A 38 (2023) 32, 2343004
https://arxiv.org/abs/2306.05290

Arrival Time from Hamiltonian with Non-Hermitian Boundary Term
Tajron Jurić, Hrvoje Nikolić
Universe 10, 35 (2024)
https://arxiv.org/abs/2307.01501

Gravitational probe of ꝗuantum spacetime
Nikola Herceg, Tajron Jurić, Andjelo Samsarov, Ivica Smolić, Kumar S. Gupta
Phys.Lett.B 854 (2024) 138716
https://arxiv.org/abs/2310.06018

Metric perturbations in noncommutative gravity
Nikola Herceg, Tajron Jurić, Andjelo Samsarov, Ivica Smolić
JHEP 06 (2024) 130
https://arxiv.org/abs/2310.06038

Lagrangian reverse engineering for regular black holes
Ana Bokulic, Edgardo Franzin, Tajron Juric, Ivica Smolic
Phys. Lett. B 854 (2024) 138750
https://arxiv.org/abs/2311.17151

Towards gravitational QNM spectrum from quantum spacetime
Nikola Herceg, Tajron Jurić, Andjelo Samsarov, Ivica Smolić
J.Phys.Conf.Ser. 2667 (2023) 1, 012074
https://arxiv.org/abs/2311.16968

White paper and roadmap for quantum gravity phenomenology in the multi-messenger era
R. Alves Batista, G. Amelino-Camelia, D. Boncioli, J.M. Carmona, A. di Matteo, G. Gubitosi, I. Lobo, N.E. Mavromatos, C. Pfeifer, D. Rubiera-Garcia, E.N. Saridakis, T. Terzić, E.C. Vagenas, P. Vargas Moniz, H. Abdalla, M. Adamo, A. Addazi, F.K. Anagnostopoulos, V. Antonelli, M. Asorey, A. Ballesteros, S. Basilakos, D. Benisty, M. Boettcher, J. Bolmont, A. Bonilla, P. Bosso, M. Bouhmadi-López, L. Burderi, A. Campoy-Ordaz, S. Caroff, S. Cerci, J.L. Cortes, V. D'Esposito, S. Das, M. de Cesare, M. Demirci, F. Di Lodovico, T. Di Salvo, J.M. Diego, G.S. Djordjevic, A. Domi, L. Ducobu, C. Escamilla-Rivera, G. Fabiano, D. Fernández-Silvestre, S.A. Franchino-Viñas, A.M. Frassino, D. Frattulillo, M. Gaug, L.Á. Gergely, E.I. Guendelman, D. Guetta, I. Gutierrez-Sagredo, P. He, S. Heefer, T. Jurić, T. Katori, J. Kowalski-Glikman, G. Lambiase, J. Levi Said, C. Li, H. Li, G.G. Luciano, B-Q. Ma, A. Marciano, M. Martinez, A. Mazumdar, G. Menezes, F. Mercati, D. Minic, L. Miramonti, V.A. Mitsou, M.F. Mustamin, S. Navas, G.J. Olmo, D. Oriti, A. Övgün, R.C. Pantig, A. Parvizi, R. Pasechnik, V. Pasic, L. Petruzziello, A. Platania, S.M.M. Rasouli, S. Rastgoo, J.J. Relancio, F. Rescic, M.A. Reyes, G. Rosati, İ. Sakallı, F. Salamida, A. Sanna, D. Staicova, J. Strišković, D. Sunar Cerci, M.D.C. Torri, A. Vigliano, F. Wagner, J-C. Wallet, A. Wojnar, V. Zarikas, J. Zhu, J.D. Zornoza
Class.Quant.Grav. 42 (2025) 3, 032001
https://arxiv.org/abs/2312.00409

Hexadecapole at the heart of nonlinear electromagnetic fields
Ana Bokulić, Tajron Jurić, Ivica Smolić
Class. Quantum Grav. 41 (2024) 157002
https://arxiv.org/abs/2403.08909

Noncommutative Reissner–Nordström Black Hole from Noncommutative Charged Scalar Field
Marija Dimitrijević Ćirić, Nikola Konjik, Tajron Jurić, Andjelo Samsarov, Ivica Smolić
Symmetry 2025, 17(1), 54
https://arxiv.org/abs/2404.03755

Entropy of black holes, charged probes and noncommutative generalization
Axel Hrelja, Tajron Jurić, Filip Požar
https://arxiv.org/abs/2407.13233

Noncommutative quasinormal modes of Schwarzschild black hole
Nikola Herceg, Tajron Jurić, A. Naveena Kumara, Andjelo Samsarov, Ivica Smolić
https://arxiv.org/abs/2409.01402

Near-horizon aspects of black holes in quantum spacetime
Nikola Herceg, Tajron Jurić, A. Naveena Kumara, Andjelo Samsarov, Ivica Smolić
J.Phys.Conf.Ser. 2912 (2024) 1, 012032
https://arxiv.org/abs/2410.00088

Constructing noncommutative black holes
Tajron Jurić, A. Naveena Kumara, Filip Požar
https://arxiv.org/abs/2503.08560

Perturbations of black holes surrounded by anisotropic matter field
Sagar J. C., Karthik R., Kartheek Hegde, K.M. Ajith, Shreyas Punacha, A. Naveena Kumara
Phys. Rev. D 111, 064034 (2025)
https://arxiv.org/abs/2411.11629

Spinning LQG black hole as a particle accelerator
Ullas P. Suresh, Karthik R, K.M. Ajith, Kartheek Hegde, Shreyas Punacha, A. Naveena Kumara
https://arxiv.org/abs/2408.15828

Lyapunov exponents and phase structure of Lifshitz and hyperscaling violating black holes
A. Naveena Kumara, Shreyas Punacha, Md Sabir Ali
JCAP 07 (2024) 061
https://arxiv.org/abs/2401.05181

Star-products for Lie-algebraic noncommutative Minkowski space-times
Valentine Maris, Filip Požar, Jean-Christophe Wallet
https://arxiv.org/abs/2503.07176

Weighing the curvature invariants
Jan Dragašević, Ina Moslavac, Ivica Smolić
https://arxiv.org/abs/2502.12242

Exact multiblack hole spacetimes in Einstein-ModMax theory
Ana Bokulić, Carlos A.R. Herdeiro
Phys.Rev.D 111 (2025) 6, 064046
https://arxiv.org/abs/2501.04779

Corrections to Kerr-Newman black hole from Noncommutative Einstein-Maxwell equation
Filip Požar
https://arxiv.org/abs/2502.03337

Event Organization

05-09 September 2022: Quantum aspects of Black Holes and Gravity, Zagreb, Croatia (A. Samsarov & T. Jurić)

Talks and Seminars

Spanish-Portugal Relativity Meeting EREP2021, 13-16 September 3021, Aveiro
  I. Smolić: Black hole thermodynamics in the presence of NLE fields

Fourth Annual Conference of COST Action CA18108 "Quantum gravity phenomenology in the multi-messenger approach"
10 - 14 July 2023, University of Rijeka, Faculty of Physics
  N. Herceg: Gravitational perturbations of noncommutative Schwarzschild black hole
  F. Požar: Black hole entropy and noncommutativity

The XII. International Symposium on Quantum Theory and Symmetries (QTS12)
24 - 28 July 2023, Technical University in Prague, Czech Republic
  A. Samsarov: Towards gravitational QNM spectrum from NC geometry

XXV SIGRAV Conference on General Relativity and Gravitation
4 - 8 September 2023, SISSA (Miramare campus)
  F. Požar: Black hole entropy and noncommutativity

April-June, 2024, Universidade de Brasilia, Brazil
  T. Jurić: "Series of seminars in math. phys.: Algebraic approach to (NC) gauge theory, Quantum completnees and smearing of singularities, Towards NC geodesics"

December 4, 2023, Universidade de Brasilia, Brazil
  T. Jurić: "Quantum origin of gauge theories II: noncommutative aspects", group seminar

November 28, 2023, Universidade de Brasilia, Brazil
  T. Jurić: "Quantum origin of gauge theories I: Feynman's derivation", group seminar

April 26 - May 17, 2023, Universidade de Brasilia, Brazil
  T. Jurić: "A Noncommutative differential geometry and application to gravity", series of seminars

59. Winter School of Theoretical Physics and third COST Action CA18108 Training School ”Grav- ity – Classical, Quantum and Phenomenology Feb. 2023
  F. Požar: Quantum correction to black hole entropy

Mini symposium on Physics and Geometry 2023, Jun. 2023
  F. Požar: Area law in NC geometry

Emergent Geometries from Strings and Quantum Fields 2023, Jun. 2023
  F. Požar: Quantum aspects of BH entropy

COST CA18108 Fourth Annual Conference 2023, Jul. 2023
  F. Požar: Noncommutativity and black hole entropy

XXV SIGRAV Conference on General Relativity and Gravitation, Sep. 2023
  F. Požar: Noncommutative Corrections to black hole entropy

Golden Wedding of Black Holes and Thermodynamics, Dec. 2023
  F. Požar: Noncommutative correction to black hole entropy

44th Winter School Geometry And Physics, Jan. 2024
  F. Požar: Noncommutative corrections to black hole entropy

SISSA, Apr. 2024
  F. Požar: Torsion and Levi-Civita connection in Drinfeld twist approach to NC geometry

Jun. 2024
  F. Požar: Twisted Hopf algebra modules are also twisted