Article
Astronomy & Astrophysics
Pasquale Bosso, Giuseppe Gaetano Luciano, Luciano Petruzziello, Fabian Wagner
Summary: This study examines various arguments in quantum gravity, both model-dependent and model-independent, which suggest a modification of Heisenberg's uncertainty principle near the Planck scale. This modification is attributed to the existence of a minimal length. The study critically reviews the conceptual shortcomings of the underlying framework and recent developments in the field. It addresses issues such as relativity, field theory generalizations, the classical limit, and the application to composite systems. Additionally, the study comments on the use of heuristic arguments and presents a comprehensive list of constraints on the model parameter ss, considering their derivation rigor and potential problems with composites.
CLASSICAL AND QUANTUM GRAVITY
(2023)
Article
Physics, Multidisciplinary
Andre Herkenhoff Gomes
Summary: The existence of a fundamental length scale in nature is predicted by various quantum gravity models. If discovered, it would have significant implications for our understanding of quantum phenomena and may lead to modifications of the Heisenberg uncertainty principle. Despite previous attention, there has not been a common framework for the systematic investigation of generalized uncertainty principles (GUP). In this study, we provide such a framework within the context of nonrelativistic quantum mechanics, based on a few assumptions and simple dimensional analysis.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2023)
Article
Astronomy & Astrophysics
Pasquale Bosso, Luciano Petruzziello, Fabian Wagner
Summary: This paper clarifies a foundational issue in the phenomenological approach to quantum gravity regarding the generalization of Heisenberg's uncertainty principle. The confusion between perturbative and non-perturbative methods in recent works has resulted in a blurred distinction between changes in the deformed algebra and changes in the representation of operators. This reasoning implies that the existence of a minimal length is representation-dependent and therefore unphysical.
Article
Astronomy & Astrophysics
Luciano Petruzziello
Summary: A novel generalization of the Heisenberg uncertainty principle is presented, introducing the concept of a maximal observable momentum without requiring a minimal uncertainty in position. This exact generalized uncertainty principle (GUP) is valid at all energy scales and has implications for quantum mechanical applications and black hole thermodynamics. Preliminary analysis shows consistency with existing expressions for GUP borrowed from string theory and other quantum gravity candidates.
CLASSICAL AND QUANTUM GRAVITY
(2021)
Article
Quantum Science & Technology
S. Aghababaei, H. Moradpour
Summary: The emergence of the generalized uncertainty principle is closely related to the existence of a non-zero minimal length. The Heisenberg uncertainty principle is central to the EPR paradox. In this study, the implications of adopting the generalized uncertainty principle (or equivalently, the minimal length) instead of the Heisenberg uncertainty principle on quantum non-locality are examined through the Franson experiment, which relies on energy-time entanglement to understand and explain the results. The survey also demonstrates the power of this experiment in testing the generalized uncertainty principle.
QUANTUM INFORMATION PROCESSING
(2023)
Article
Optics
Lin Wu, Liu Ye, Dong Wang
Summary: This research optimizes uncertainty relations by proposing a tighter lower bound and generalizing it to multipartite systems. Experimental results demonstrate that the new bound outperforms the previous one. These findings are significant for the security of quantum key distribution protocols and quantum precision measurements.
Article
Physics, Multidisciplinary
Pasquale Bosso, Saurya Das, Vasil Todorinov
Summary: This paper investigates Quantum Electrodynamics under the condition of minimum length and discusses its implications for high energy physics experiments. By providing an improved window, the research aims to test Quantum Gravity effects in laboratory settings.
Article
Astronomy & Astrophysics
Zhong-Wen Feng, Xia Zhou, Shi-Qi Zhou
Summary: The paper investigates the mechanism of gravitational baryogenesis for generating baryon asymmetry in the early Universe. It is found that using a higher-order generalized uncertainty principle (GUP) can break the thermal equilibrium of the Universe and produce baryon asymmetry. The results of the study satisfy Sakharov's conditions, demonstrating the feasibility of explaining baryon asymmetry within the framework of higher-order GUP.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Michael Bishop, Joey Contreras, Douglas Singleton
Summary: In this study, an important feature of the generalized uncertainty principle (GUP) approach to quantizing gravity is highlighted: different pairs of modified operators can have different physical consequences, depending on the modifications to the position and/or momentum operators rather than just the resulting modified commutator.
Article
Astronomy & Astrophysics
Ilim Cimdiker, Mariusz P. Dabrowski, Hussain Gohar
Summary: This study investigates the effect of the generalized uncertainty principle (GUP) on nonextensive thermodynamics applied to black holes and the sparsity of radiation at different temperatures related to each nonextensive entropy. Various entropies, temperatures, and heat capacities are examined, and it is shown that due to GUP corrections, the temperature and entropy have finite values, indicating that the black hole reaches a remnant state at the end of the evaporation process. The sparsity of radiation for massless bosons at each temperature is found to depend on the mass of the black hole, and GUP reduces the sparsity profile compared to the sparsity parameter at Hawking temperature.
CLASSICAL AND QUANTUM GRAVITY
(2023)
Article
Physics, Multidisciplinary
B. Hamil, B. C. Lutfuoglu
Summary: One of the main features of Nouicer's GUP formalism is its consideration of deformation contributions to all orders of the Planck length. This manuscript applies the formalism to examine various interesting applications such as ideal gas thermodynamics, Unruh-Davies-DeWitt-Fulling effect, cosmological constant, and blackbody radiation spectrum. GUP corrected results are derived and compared with conventional ones in all cases.
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
(2022)
Article
Astronomy & Astrophysics
Pasquale Bosso
Summary: Quantum mechanical models with a minimal length often involve modifying the relationship between position and momentum. While this is a minor complication in momentum space, the representation in (quasi-)position space poses many issues and leads to misunderstandings. This work reviews and clarifies some aspects of minimal length models, focusing on the representation of the position operator.
CLASSICAL AND QUANTUM GRAVITY
(2021)
Article
Astronomy & Astrophysics
Li-Hua Wang, Meng-Sen Ma
Summary: This paper re-derives the black hole entropy of static spherically symmetric black holes based on the concept of fractal black hole horizon. The temperatures and heat capacities of Schwarzschild, Reissner-Nordstrom, and RN-AdS black holes are calculated, showing that these black holes are thermodynamically stable. The heat capacity of RN-AdS black hole exhibits Schottky anomaly-like behavior, indicating the existence of discrete energy levels and restricted microscopic degrees of freedom.
Article
Astronomy & Astrophysics
Mohamed Moussa, Homa Shababi, Anisur Rahaman, Ujjal Kumar Dey
Summary: The study investigates the temporal evolution of universe temperature with respect to the Hubble parameter associated with Stochastic Gravitational Waves (SGW) within the Generalized Uncertainty Principle (GUP) framework. The research shows that the free parameter alpha in the GUP framework can slightly enhance the SGW frequency at lower frequencies, which may have implications for future SGW detection using gravitational wave facilities.
Article
Astronomy & Astrophysics
Saurya Das, Sujoy K. Modak
Summary: This study improves upon previous research and explores the potential for testing these improvements in the laboratory. The results show that despite the presence of relativistic corrections, the previous claims remain intact and are strengthened.
CLASSICAL AND QUANTUM GRAVITY
(2022)
Article
Physics, Multidisciplinary
Fateme Rajabi, Kourosh Nozari
CANADIAN JOURNAL OF PHYSICS
(2019)
Article
Astronomy & Astrophysics
Mohsen Khodadi, Kourosh Nozari
GENERAL RELATIVITY AND GRAVITATION
(2018)
Article
Physics, Mathematical
M. Roushan, K. Nozari
INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS
(2018)
Article
Physics, Mathematical
Vahid Hosseinzadeh, Kourosh Nozari
INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS
(2018)
Article
Physics, Mathematical
Kourosh Nozari, Naser Sadeghnezhad
INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS
(2019)
Article
Physics, Particles & Fields
M. Roushan, K. Nozari
EUROPEAN PHYSICAL JOURNAL C
(2019)
Article
Astronomy & Astrophysics
K. Nozari, P. Dehghani
Article
Physics, Multidisciplinary
Mohsen Khodadi, Kourosh Nozari, Anha Bhat, Sina Mohsenian
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
(2019)
Article
Physics, Multidisciplinary
Mohsen Khodadi, Kourosh Nozari
COMMUNICATIONS IN THEORETICAL PHYSICS
(2019)
Article
Physics, Particles & Fields
Kourosh Nozari, M. Hajebrahimi, M. Khodadi, A. Etemadi
EUROPEAN PHYSICAL JOURNAL C
(2019)
Article
Physics, Mathematical
S. Saghafi, K. Nozari, A. D. Kamali
INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS
(2019)
Article
Astronomy & Astrophysics
R. Shojaee, K. Nozari, F. Darabi
INTERNATIONAL JOURNAL OF MODERN PHYSICS D
(2020)
Article
Physics, Particles & Fields
M. Roushan, K. Nozari
EUROPEAN PHYSICAL JOURNAL C
(2020)
Article
Astronomy & Astrophysics
R. Shojaee, K. Nozari, F. Darabi
Summary: In this study, we investigated cosmological inflation in a Galileon inflationary model with the E-model potential to identify possible alpha-attractors. By analyzing the evolution of perturbations and considering the reheating phase post-inflation, we found universal values for the scalar spectral index and tensor-to-scalar ratio. Comparing our results with Planck data, we discovered constraints on the model's parameter space, including the potential for a longer reheating phase and observational viable values of ns associated with a larger temperature range.
INTERNATIONAL JOURNAL OF MODERN PHYSICS D
(2021)
Article
Astronomy & Astrophysics
Kourosh Nozari, Narges Rashidi
ASTROPHYSICAL JOURNAL
(2019)
