1.

Parity at the Planck scale
/ Arzano, Michele ; Gubitosi, Giulia ; Magueijo, João
We explore the possibility that well known properties of the parity operator, such as its idempotency and unitarity, might break down at the Planck scale. [...]
Published in Physics letters B (2018)
10.1016/j.physletb.2018.04.027
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2.

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 nonnegative at all scales, then the entanglement entropy cannot be finite. [...]
Published in EPJC 77 (2017) 835
10.1140/epjc/s1005201753935
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3.

Relativistic Planckscale polymer
/ AmelinoCamelia, Giovanni ; Arzano, Michele ; Da Silva, Malú Maira ; OrozcoBorunda, 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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4.

SpaceTime Defects and Group Momentum Space
/ Trześniewski, Tomasz ; Arzano, Michele
We study massive and massless conical defects in Minkowski and de Sitter spaces in various spacetime dimensions. [...]
Published in Advances in High Energy Physics 2017 (2017) 4731050
10.1155/2017/4731050
arXiv:1412.8452
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5.

Noncommutative fields and the shortscale structure of spacetime
/ Arzano, Michele ; KowalskiGlikman, 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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6.

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 fourmomentum space. [...]
Published in Physics letters B (2017)
10.1016/j.physletb.2017.02.005
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7.

Deformed discrete symmetries
/ Arzano, Michele ; KowalskiGlikman, 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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8.

Planckscale dimensional reduction without a preferred frame
/ AmelinoCamelia, Giovanni ; Arzano, Michele ; Gubitosi, Giulia ; Magueijo, João
Several approaches to quantum gravity suggest that the standard description of spacetime as probed at lowenergy, 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) 317320
10.1016/j.physletb.2014.07.030
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