Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Sara Murciano"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 2, Pp 1-27 (2024)
Abstract We investigate how entanglement in the mixed state of a quantum field theory can be described using the cross-computable norm or realignment (CCNR) criterion, employing a recently introduced negativity. We study its symmetry resolution for t
Externí odkaz:
https://doaj.org/article/96bea0125b814d53a4c8691a45e16770
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 11, Pp 1-50 (2023)
Abstract We perform a comprehensive analysis of the symmetry-resolved (SR) entanglement entropy (EE) for one single interval in the ground state of a 1 + 1D conformal field theory (CFT), that is invariant under an arbitrary finite or compact Lie grou
Externí odkaz:
https://doaj.org/article/fa9a7a52b85648b6921217daee7ef2c4
Publikováno v:
PRX Quantum, Vol 5, Iss 3, p 030307 (2024)
Entanglement, measurement, and classical communication together enable teleportation of quantum states between distant parties, in principle, with perfect fidelity. To what extent do correlations and entanglement of a many-body wave function transfer
Externí odkaz:
https://doaj.org/article/0036cec2d41c4c0ba35c3966bee6381a
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 6, Pp 1-44 (2023)
Abstract The negativity Hamiltonian, defined as the logarithm of a partially transposed density matrix, provides an operatorial characterisation of mixed-state entanglement. However, so far, it has only been studied for the mixed-state density matric
Externí odkaz:
https://doaj.org/article/f7244f3d00ff4b96a4f596b95a1cb63c
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-7 (2023)
Abstract Symmetry and symmetry breaking are two pillars of modern quantum physics. Still, quantifying how much a symmetry is broken is an issue that has received little attention. In extended quantum systems, this problem is intrinsically bound to th
Externí odkaz:
https://doaj.org/article/ce5ea9040aa24480903efad1ef1dc2d5
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 3, Pp 1-45 (2023)
Abstract Whenever a system possesses a conserved charge, the density matrix splits into eigenspaces associated to the each symmetry sector and we can access the entanglement entropy in a given subspace, known as symmetry resolved entanglement (SRE).
Externí odkaz:
https://doaj.org/article/63bbaec10cd24415ae40ff069d602173
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 11, Pp 1-29 (2022)
Abstract We consider the ground state of a theory composed by M species of massless complex bosons in one dimension coupled together via a conformal interface. We compute both the Rényi entropy and the negativity of a generic partition of wires, gen
Externí odkaz:
https://doaj.org/article/057130033e604ec59505162c929d3a27
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 9, Pp 1-37 (2022)
Abstract We study the multi-charged moments for two disjoint intervals in the ground state of two 1 + 1 dimensional CFTs with central charge c = 1 and global U(1) symmetry: the massless Dirac field theory and the compact boson (Luttinger liquid). For
Externí odkaz:
https://doaj.org/article/ab4e314290be44609fbd583d9414bb97
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 8, Pp 1-35 (2022)
Abstract We investigate the ground state of a (1+1)-dimensional conformal field theory (CFT) built with M species of massless free Dirac fermions coupled at one boundary point via a conformal junction/interface. Each CFT represents a wire of finite l
Externí odkaz:
https://doaj.org/article/6c2a6163e6924e609a26167892806bc5
Publikováno v:
Physical Review X, Vol 13, Iss 4, p 041042 (2023)
Quantum critical systems constitute appealing platforms for exploring novel measurement-induced phenomena due to their innate sensitivity to perturbations. We study the impact of measurements on paradigmatic Ising quantum-critical chains using an exp
Externí odkaz:
https://doaj.org/article/40a650f802694448a24533677ca7bf63