Zobrazeno 1 - 10
of 273
pro vyhledávání: '"Mitra, Aditi"'
Symmetry-protected topological (SPT) phases in insulators and superconductors are known for their robust edge modes, linked to bulk invariants through the bulk-boundary correspondence. While this principle traditionally applies to gapped phases, rece
Externí odkaz:
http://arxiv.org/abs/2411.02526
Physical quantities with long lifetimes have both theoretical significance in the study of quantum many-body systems and practical implications for quantum technologies. In this manuscript, we investigate the roles played by topological defects in th
Externí odkaz:
http://arxiv.org/abs/2410.17317
Autor:
Yeh, Hsiu-Chung, Mitra, Aditi
Recursion methods such as Krylov techniques map complex dynamics to an effective non-interacting problem in one dimension. For example, the operator Krylov space for Floquet dynamics can be mapped to the dynamics of an edge operator of the one-dimens
Externí odkaz:
http://arxiv.org/abs/2410.15223
Publikováno v:
Phys. Rev. B 110, 075117 (2024)
Results are presented for the dynamics of edge modes in interacting Floquet Ising chains. It is shown that in addition to the quasi-stable $0$ and $\pi$ edge modes, a third long lived edge mode arising from the operator product of the $0$ and $\pi$ e
Externí odkaz:
http://arxiv.org/abs/2403.18194
Publikováno v:
Phys. Rev. Lett. 133, 050606 (2024)
It is a classic result that certain interacting integrable spin chains host robust edge modes known as strong zero modes (SZMs). In this work, we extend this result to the Floquet setting of local quantum circuits, focusing on a prototypical model pr
Externí odkaz:
http://arxiv.org/abs/2401.12305
Autor:
Yeh, Hsiu-Chung, Mitra, Aditi
Publikováno v:
Phys. Rev. B 110, 155109 (2024)
It is shown that the stroboscopic time-evolution under a Floquet unitary, in any spatial dimension, and of any Hermitian operator, can be mapped to an operator Krylov space which is identical to that generated by the edge operator of the non-interact
Externí odkaz:
http://arxiv.org/abs/2311.15116
Autor:
Ling, Henry, Richard, Philip, Koshkaki, Saeed Rahmanian, Kolodrubetz, Michael, Meidan, Dganit, Mitra, Aditi, Pereg-Barnea, T.
Publikováno v:
Phys. Rev. B 109, 155144 (2024)
We study a periodically driven one dimensional Kitaev model in the presence of disorder. In the clean limit our model exhibits four topological phases corresponding to the existence or non-existence of edge modes at zero and pi quasienergy. When diso
Externí odkaz:
http://arxiv.org/abs/2310.17088
Investigating the interplay of dualities, generalized symmetries, and topological defects beyond theoretical models is an important challenge in condensed matter physics and quantum materials. A simple model exhibiting this physics is the transverse-
Externí odkaz:
http://arxiv.org/abs/2308.02387
Autor:
Yeh, Hsiu-Chung, Cardoso, Gabriel, Korneev, Leonid, Sels, Dries, Abanov, Alexander G., Mitra, Aditi
Publikováno v:
Phys. Rev. B 108, 165143 (2023)
The transverse field Ising model (TFIM) on the half-infinite chain possesses an edge zero mode. This work considers an impurity model -- TFIM perturbed by a boundary integrability breaking interaction. For sufficiently large transverse field, but in
Externí odkaz:
http://arxiv.org/abs/2305.11325
Publikováno v:
Phys. Rev. B 108, 075112 (2023)
The stability and dynamics of almost strong zero and $\pi$ modes in weakly non-integrable Floquet spin chains are investigated. Such modes can also be viewed as localized Majorana modes at the edge of a topological superconductor. Perturbation theory
Externí odkaz:
http://arxiv.org/abs/2305.04980