Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Quinta, Gonçalo"'
Autor:
Quinta, Gonçalo M., Flachi, Antonino
We develop a non-conventional description of the vacuum energy in quantum field theory in terms of quantum entropy. Precisely, we show that the vacuum energy of any non-interacting quantum field at zero temperature is proportional to the quantum entr
Externí odkaz:
http://arxiv.org/abs/2312.17317
Autor:
Quinta, Gonçalo M., André, Rui
We study how the successive scattering of spin 1/2 particles with a central spin 1/2 target particle can generate entanglement between the helicity degrees of freedom of all scattered particles, effectively producing a multipartite entangled state. W
Externí odkaz:
http://arxiv.org/abs/2311.11102
Publikováno v:
PRX Quantum 5, 020311 (2024)
The last few years have seen rapid development of applications of quantum computation to quantum field theory. The first algorithms for quantum simulation of scattering have been proposed in the context of scalar and fermionic theories, requiring tho
Externí odkaz:
http://arxiv.org/abs/2305.07692
Autor:
Quinta, Gonçalo M.
We show that virtual particles, despite being unobservable, can be described by quantum operators which can be interpreted under certain conditions as valid qubit quantum states. For a single virtual fermion, we prove that such a state is a separable
Externí odkaz:
http://arxiv.org/abs/2211.05782
We show how a minimization principle of quantum entanglement between the oscillating flavors of a neutrino leads to a unique prediction for the CP-violation phase in the neutrino sector without assuming extra symmetries in the Standard Model. We find
Externí odkaz:
http://arxiv.org/abs/2207.03303
Publikováno v:
Phys. Rev. A 109, 032424 (2024)
We show that a single polynomial entanglement measure is enough to verify equivalence between generic $n$-qubit states under Stochastic Local Operations with Classical Communication (SLOCC). SLOCC operations may be represented geometrically by M\"obi
Externí odkaz:
http://arxiv.org/abs/2106.00850
Autor:
Magano, Duarte, Kumar, Akshat, Kālis, Mārtiņš, Locāns, Andris, Glos, Adam, Pratapsi, Sagar, Quinta, Gonçalo, Dimitrijevs, Maksims, Rivošs, Aleksander, Bargassa, Pedrame, Seixas, João, Ambainis, Andris, Omar, Yasser
Publikováno v:
Physical Review D 105 (2022) 076012
To investigate the fundamental nature of matter and its interactions, particles are accelerated to very high energies and collided inside detectors, producing a multitude of other particles that are scattered in all directions. As charged particles t
Externí odkaz:
http://arxiv.org/abs/2104.11583
Autor:
Quinta, Gonçalo M.
Systems at finite temperature make up the vast majority of realistic physical scenarios. Indeed, although zero temperature is often accompanied by simpler mathematics, the richness in physical results is evident when one considers the system to have
Externí odkaz:
http://arxiv.org/abs/2005.13965
Publikováno v:
Phys. Rev. A 100, 062329 (2019)
In this work, we explore the space of quantum states composed of $N$ particles. To investigate the entanglement resistant to particles loss, we introduce the notion of $m$-resistant states. A quantum state is $m$-resistant if it remains entangled aft
Externí odkaz:
http://arxiv.org/abs/1908.10390
Publikováno v:
Phys. Rev. D 99, 125013 (2019)
The thermodynamic properties of self-gravitating spherical thin matter shells an black holes in $d>4$ dimensions are studied, extending previous analysis for $d=4$. The shell joins a Minkowski interior to a Tangherlini exterior, i.e., a Schwarzschild
Externí odkaz:
http://arxiv.org/abs/1905.05239