Zobrazeno 1 - 10
of 131
pro vyhledávání: '"Fagotti, Maurizio"'
We consider time evolution of order parameters and entanglement asymmetries in the ferromagnetic phase of the transverse-field Ising chain. One side of the system is prepared in a ferromagnetic ground state and the other side either in equilibrium at
Externí odkaz:
http://arxiv.org/abs/2411.04089
We consider translationally invariant quantum spin-$\frac{1}{2}$ chains with local interactions and a discrete symmetry that is spontaneously broken at zero temperature. We envision experimenters switching off the couplings between two parts of the s
Externí odkaz:
http://arxiv.org/abs/2410.10645
Autor:
Fagotti, Maurizio, Marić, Vanja
We work out a generalization of the Szeg\"o limit theorems on the determinant of large matrices. We focus on matrices with nonzero leading principal minors and elements that decay to zero exponentially fast with the distance from the main diagonal, b
Externí odkaz:
http://arxiv.org/abs/2406.12781
Energy-filtered quantum states are promising candidates for efficiently simulating thermal states. We explore a protocol designed to transition a product state into an eigenstate located in the middle of the spectrum; this is achieved by gradually re
Externí odkaz:
http://arxiv.org/abs/2405.02158
Publikováno v:
J. High Energ. Phys. 2024, 44 (2024)
We take the paradigm of interacting spin chains, the Heisenberg spin-$\frac{1}{2}$ XXZ model, as a reference system and consider interacting models that are related to it by Jordan-Wigner transformations and restrictions to sub-chains. An example is
Externí odkaz:
http://arxiv.org/abs/2312.10028
Autor:
Fagotti, Maurizio
Publikováno v:
Phys. Rev. X 14, 021015 (2024)
A quantum spin-$\frac{1}{2}$ chain with an axial symmetry is normally described by quasiparticles associated with the spins oriented along the axis of rotation. Kinetic constraints can enrich such a description by setting apart different species of q
Externí odkaz:
http://arxiv.org/abs/2307.14979
Autor:
Bocini, Saverio, Fagotti, Maurizio
Publikováno v:
Phys. Rev. B 109, L201116 (2024)
We argue that, in a basis common to all one-site shift invariant conserved charges, there is no eigenstate of a noninteracting local spin-1/2 chain Hamiltonian that satisfies the area law if the ground state has half-integer central charge. That is t
Externí odkaz:
http://arxiv.org/abs/2303.09525
Autor:
Marić, Vanja, Fagotti, Maurizio
Publikováno v:
J. High Energ. Phys. 2023, 140 (2023)
We consider the R\'enyi-$\alpha$ tripartite information $I_3^{(\alpha)}$ of three adjacent subsystems in the stationary state emerging after global quenches in noninteracting spin chains from both homogeneous and bipartite states. We identify setting
Externí odkaz:
http://arxiv.org/abs/2302.01322
Autor:
Bocini, Saverio, Fagotti, Maurizio
We envisage many-body systems that can be described by quantum spin-chain Hamiltonians with a trivial separable eigenstate. For generic Hamiltonians, such a state represents a quantum scar. We show that, typically, a macroscopically-entangled state n
Externí odkaz:
http://arxiv.org/abs/2210.15585
Autor:
Marić, Vanja, Fagotti, Maurizio
Publikováno v:
Phys. Rev. B 108, L161116 (2023)
We consider macroscopically large 3-partitions $(A,B,C)$ of connected subsystems $A\cup B \cup C$ in infinite quantum spin chains and study the R\'enyi-$\alpha$ tripartite information $I_3^{(\alpha)}(A,B,C)$. At equilibrium in clean 1D systems with l
Externí odkaz:
http://arxiv.org/abs/2209.14253