Zobrazeno 1 - 10
of 196
pro vyhledávání: '"Giampaolo S"'
We employ the Stabilizer Renyi Entropy (SRE) to characterize a quantum phase transition that has so far eluded any standard description and can thus now be explained in terms of the interplay between its non-stabilizer properties and entanglement. Th
Externí odkaz:
http://arxiv.org/abs/2406.19457
Publikováno v:
Quantum 7, 1115 (2023)
It is widely accepted that the dynamic of entanglement in presence of a generic circuit can be predicted by the knowledge of the statistical properties of the entanglement spectrum. We tested this assumption by applying a Metropolis-like entanglement
Externí odkaz:
http://arxiv.org/abs/2210.13495
Publikováno v:
SciPost Phys. 15, 131 (2023)
We advance the characterization of complexity in quantum many-body systems by examining $W$-states embedded in a spin chain. Such states show an amount of non-stabilizerness or "magic" (measured as the Stabilizer R\'enyi Entropy -SRE-) that grows log
Externí odkaz:
http://arxiv.org/abs/2209.10541
Publikováno v:
The European Physical Journal C volume 80, Article number: 423 (2020)
We analyze the oscillations of Rydberg atoms in the framework of quantum field theory and we reveal non-trivial vacuum energy which has the equation of state of the dark matter. This energy is similar to that expected for mixed neutrinos and affects
Externí odkaz:
http://arxiv.org/abs/1912.03332
Autor:
Capolupo, A., Giampaolo, S. M.
Publikováno v:
Physics Letters B Volume 792, 10 May 2019, Pages 298-303
We study the total and the geometric phase associated with neutrino mixing and we show that the phases produced by the neutrino oscillations have different values depending on the representation of the mixing matrix and on the neutrino nature. Theref
Externí odkaz:
http://arxiv.org/abs/1904.11249
Akademický článek
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We analyze many aspects of the phenomenon of the decoherence for neutrinos propagating in long baseline experiments. We show that, in the presence of an off-diagonal term in the dissipative matrix, the Majorana neutrino can violate the CP T symmetry,
Externí odkaz:
http://arxiv.org/abs/1807.07823
Autor:
Zonzo, G., Giampaolo, S. M.
In this paper we analize a family of one dimensional fully analytically solvable models, named the n-cluster models in a transverse magnetic field, in which a many-body cluster interaction competes with a uniform transverse magnetic field. These mode
Externí odkaz:
http://arxiv.org/abs/1709.06147
Publikováno v:
Phys.Lett. B 780, 216 (2018)
We analize the non-cyclic geometric phase for neutrinos. We find that the geometric phase and the total phase associated to the mixing phenomenon provide a tool to distinguish between Dirac and Majorana neutrinos. Our results hold for neutrinos propa
Externí odkaz:
http://arxiv.org/abs/1610.08679
Publikováno v:
J. Stat. Mech. 2018, 023101 (2018)
Frustration of classical many-body systems can be used to distinguish ferromagnetic interactions from anti-ferromagnetic ones via the Toulouse conditions. A quantum version of the Toulouse conditions provides a similar classification based on the loc
Externí odkaz:
http://arxiv.org/abs/1607.05692