Non-perturbative methodologies for low-dimensional strongly-correlated systems: From non-abelian bosonization to truncated spectrum methods
We review two important non-perturbative approaches for extracting the physics of low-
dimensional strongly correlated quantum systems. Firstly, we start by providing a …
dimensional strongly correlated quantum systems. Firstly, we start by providing a …
Majorana edge states in interacting two-chain ladders of fermions
In this work, we study interacting spinless fermions on a two-chain ladder with interchain pair
tunneling while single-particle tunneling is suppressed at low energy. The model embodies …
tunneling while single-particle tunneling is suppressed at low energy. The model embodies …
Effective field theory for one-dimensional valence-bond-solid phases and their symmetry protection
Y Fuji - Physical Review B, 2016 - APS
We investigate valence-bond-solid (VBS) phases in one-dimensional spin systems by an
effective field theory developed by Schulz [Phys. Rev. B 34, 6372 (1986) PRBMDO 0163 …
effective field theory developed by Schulz [Phys. Rev. B 34, 6372 (1986) PRBMDO 0163 …
Melting of a frustration-induced dimer crystal and incommensurability in the - two-leg ladder
The phase diagram of an antiferromagnetic ladder with frustrating next-nearest-neighbor
couplings along the legs is determined using numerical methods (exact diagonalization and …
couplings along the legs is determined using numerical methods (exact diagonalization and …
Phase diagram of S= 1 2 two-leg xxz spin-ladder systems
K Hijii, A Kitazawa, K Nomura - Physical Review B—Condensed Matter and …, 2005 - APS
We investigate the ground-state phase diagram of the S= 1 2 two-leg XXZ spin-ladder
system with an isotropic interchain coupling. In this model, there is the Berezinskii-Kosterlitz …
system with an isotropic interchain coupling. In this model, there is the Berezinskii-Kosterlitz …
Nontopological Majorana zero modes in inhomogeneous spin ladders
We show that the coupling of homogeneous Heisenberg spin-1/2 ladders in different phases
leads to the formation of interfacial zero energy Majorana bound states. Unlike Majorana …
leads to the formation of interfacial zero energy Majorana bound states. Unlike Majorana …
Symmetry-protected topological phases in spin ladders with two-body interactions
Spin-1/2 two-legged ladders respecting interleg exchange symmetry σ and spin rotation
symmetry D 2 have new symmetry-protected topological (SPT) phases which are different …
symmetry D 2 have new symmetry-protected topological (SPT) phases which are different …
Emergent SU (3) symmetry in a four-leg spin tube
E Orignac - Physical Review B, 2024 - APS
We consider an antiferromagnetic four-leg spin-1/2 tube using Abelian and non-Abelian
bosonization. We show that in the limit of weak interchain coupling, the most relevant …
bosonization. We show that in the limit of weak interchain coupling, the most relevant …
Phase diagram and entanglement of two interacting topological Kitaev chains
A superconducting wire described by ap-wave pairing and a Kitaev Hamiltonian exhibits
Majorana fermions at its edges and is topologically protected by symmetry. We consider two …
Majorana fermions at its edges and is topologically protected by symmetry. We consider two …
Symmetry-protected topological phases, conformal criticalities, and duality in exactly solvable SO() spin chains
We introduce a family of SO (n)-symmetric spin chains which generalize the transverse-field
Ising chain for n= 1. These spin chains are defined with gamma matrices and can be exactly …
Ising chain for n= 1. These spin chains are defined with gamma matrices and can be exactly …