SCOAP3 Repository 7 records found  Search took 0.01 seconds. 
1. Finite entanglement entropy and spectral dimension in quantum gravity / Arzano, Michele ; Calcagni, Gianluca
What are the conditions on a field theoretic model leading to a finite entanglement entropy density? We prove two very general results: (1) Ultraviolet finiteness of a theory does not guarantee finiteness of the entropy density; (2) If the spectral dimension of the spatial boundary across which the entropy is calculated is non-negative at all scales, then the entanglement entropy cannot be finite. [...]
Published in EPJC 77 (2017) 835 10.1140/epjc/s10052-017-5393-5
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2. Relativistic Planck-scale polymer / Amelino-Camelia, Giovanni ; Arzano, Michele ; Da Silva, Malú Maira ; Orozco-Borunda, Daniel H.
Polymer quantum mechanics has been studied as a simplified picture that reflects some of the key properties of Loop Quantum Gravity; however, while the fate of relativistic symmetries in Loop Quantum Gravity is still not established, it is usually assumed that the discrete polymer structure should lead to a breakdown of relativistic symmetries. [...]
Published in Physics letters B (2017) 10.1016/j.physletb.2017.10.071
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3. Space-Time Defects and Group Momentum Space / Trześniewski, Tomasz ; Arzano, Michele
We study massive and massless conical defects in Minkowski and de Sitter spaces in various space-time dimensions. [...]
Published in Advances in High Energy Physics 2017 (2017) 4731050 10.1155/2017/4731050 arXiv:1412.8452
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4. Non-commutative fields and the short-scale structure of spacetime / Arzano, Michele ; Kowalski-Glikman, Jerzy
There is a growing evidence that due to quantum gravity effects the effective spacetime dimensionality might change in the UV. [...]
Published in Physics letters B (2017) 10.1016/j.physletb.2017.05.047
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5. UV dimensional reduction to two from group valued momenta / Arzano, Michele ; Nettel, Francisco
We describe a new model of deformed relativistic kinematics based on the group manifold U(1)×SU(2) as a four-momentum space. [...]
Published in Physics letters B (2017) 10.1016/j.physletb.2017.02.005
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6. Deformed discrete symmetries / Arzano, Michele ; Kowalski-Glikman, Jerzy
We construct discrete symmetry transformations for deformed relativistic kinematics based on group valued momenta. [...]
Published in Physics letters B (2016) 10.1016/j.physletb.2016.06.048
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7. Planck-scale dimensional reduction without a preferred frame / Amelino-Camelia, Giovanni ; Arzano, Michele ; Gubitosi, Giulia ; Magueijo, João
Several approaches to quantum gravity suggest that the standard description of spacetime as probed at low-energy, with four dimensions, is replaced in the Planckian regime by a spacetime with a spectral dimension of two. [...]
Published in Physics letters B 736 (2014) 317-320 10.1016/j.physletb.2014.07.030
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