Zobrazeno 1 - 10
of 99
pro vyhledávání: '"Kells, G."'
We investigate how particle pair creation and annihilation, within the quantum transverse XY model, affects the non-equilibrium steady state (NESS) and Liouvillian gap of the stochastic Totally Asymmetric Exclusion Process (TASEP). By utilising opera
Externí odkaz:
http://arxiv.org/abs/2110.08283
Autor:
Kells, G.
Publikováno v:
Phys. Rev. B 92, 155434 (2015)
In the topological phase of p-wave superconductors, zero-energy Majorana quasi-particle excitations can be well-defined in the presence of local density-density interactions. Here we examine this phenomenon from the perspective of matrix representati
Externí odkaz:
http://arxiv.org/abs/1507.06539
Autor:
Kells, G.
Publikováno v:
Phys. Rev. B 92, 081401 (2015)
The one-dimensional p-wave topological superconductor model with open-boundary conditions is examined in its topological phase. Using the eigenbasis of the non-interacting system I show that, provided the interactions are local and do not result in a
Externí odkaz:
http://arxiv.org/abs/1409.6575
Publikováno v:
Phys. Rev. B 89, 235130 (2014)
We study the non-equilibrium dynamics of quenching through a quantum critical point in topological systems, focusing on one of their defining features: ground state degeneracies and associated topological sectors. We present the notion of 'topologica
Externí odkaz:
http://arxiv.org/abs/1312.6387
Publikováno v:
Phys. Rev. B 86, 100503(R) (2012)
A one-dimensional spin-orbit coupled nanowire with proximity-induced pairing from a nearby s-wave superconductor may be in a topological nontrivial state, in which it has a zero energy Majorana bound state at each end. We find that the topological tr
Externí odkaz:
http://arxiv.org/abs/1207.3067
Publikováno v:
Phys. Rev. B 86, 125423 (2012)
Multimode spinless p-wave superconducting wires with a width W much smaller than the superconducting coherence length \xi are known to have multiple low-energy subgap states localized near the wire's ends. Here we compare the typical energies of such
Externí odkaz:
http://arxiv.org/abs/1207.2993
Publikováno v:
Phys. Rev. B 85, 060507(R) (2012)
One-dimensional p-wave superconductors are known to harbor Majorana bound states at their ends. Superconducting wires with a finite width W may have fermionic subgap states in addition to possible Majorana end states. While they do not necessarily in
Externí odkaz:
http://arxiv.org/abs/1110.4062
Publikováno v:
New J.Phys.13:095014,2011
Exactly solvable lattice models for spins and non-interacting fermions provide fascinating examples of topological phases, some of them exhibiting the localized Majorana fermions that feature in proposals for topological quantum computing. The Chern
Externí odkaz:
http://arxiv.org/abs/1012.5276
In this work we discuss the formation of zero energy vortex and chiral edge modes in a fermionic representation of the Kitaev honeycomb model. We introduce the representation and show how the associated Jordan-Wigner procedure naturally defines the s
Externí odkaz:
http://arxiv.org/abs/1006.4951
Publikováno v:
Phys. Rev. B 81, 104429 (2010)
We examine the star lattice Kitaev model whose ground state is a a chiral spin liquid. We fermionize the model such that the fermionic vacua are toric code states on an effective Kagome lattice. This implies that the Abelian phase of the system is in
Externí odkaz:
http://arxiv.org/abs/0911.5623