Signatures of Domain-Wall Confinement in Raman Spectroscopy of Ising Spin Chains

Abstract

Mesonic bound states of domain walls can be stabilized in quasi one-dimensional magnetic compounds. Here, we theoretically study the Raman light scattering response of a twisted Kitaev chain with tilted magnetic fields as a minimal model for confinement in ${\mathrm{CoNb}}_2{\mathrm{O}}_6$. By both numerical matrix product states and few-domain wall variational states, we show that confinement-induced bound states directly manifest themselves as sharp peaks in the Raman response. Remarkably, by tuning the polarization of the incident light field, we demonstrate that the Raman response offers new insights into the intrinsic symmetry of the bound state wavefunction.

arXiv comment15 pages, 9 figures

References in corpus (28)

• Quantum criticality in an Ising chain: experimental evidence for emergent E8 symmetry
• Efficient numerical simulations with Tensor Networks: Tensor Network Python (TeNPy)
• Confinement of fractional quantum number particles in a condensed matter system
• Evolution of Quantum Fluctuations Near the Quantum Critical Point of the Transverse Field Ising Chain System CoNb${}_2$O${}_6$
• A hierarchy of bound states in the 1D ferromagnetic Ising chain CoNb${}_2$O${}_6$ investigated by high resolution time-domain terahertz spectroscopy
• Topological quantum phase transition in the Ising-like antiferromagnetic spin chain BaCo${}_2$V${}_2$O${}_8$
• Spinon confinement in a quasi one dimensional anisotropic Heisenberg magnet
• Heat capacity anomaly at the quantum critical point of the Transverse Ising Magnet CoNb_2O_6
• Spinon Confinement in the One-Dimensional Ising-Like Antiferromagnet SrCo2V2O8
• Bound states and E_8 symmetry effects in perturbed quantum Ising chains
• $E_8$ Spectra of Quasi-one-dimensional Antiferromagnet BaCo${}_2$V${}_2$O${}_8$ under Transverse Field
• Duality and domain wall dynamics in a twisted Kitaev chain
• Prethermalization in one-dimensional quantum many-body systems with confinement
• Excitations in the quantum paramagnetic phase of the quasi-one-dimensional Ising magnet CoNb${}_2$O${}_6$ in a transverse field: Geometric frustration and quantum renormalization effects
• Observation of E8 Particles in an Ising Chain Antiferromagnet
• Glide symmetry breaking and Ising criticality in the quasi-1D magnet CoNb${}_2$O${}_6$
• From confined spinons to emergent fermions: Observation of elementary magnetic excitations in a transverse-field Ising chain
• Experimental Observation of Quantum Many-Body Excitations of $E_8$ Symmetry in the Ising Chain Ferromagnet CoNb${}_2$O${}_6$
• "Quasi-particle breakdown" in the quasi-one-dimensional Ising ferromagnet CoNb${}_2$O${}_6$
• On the weak confinement of kinks in the one-dimensional quantum ferromagnet CoNb2O6
• Nonlinear spectroscopy of bound states in perturbed Ising spin chains
• Tuning the confinement potential between spinons in the Ising chain CoNb2O6 using longitudinal fields and quantitative determination of the microscopic Hamiltonian
• Shedding Light on Microscopic Details: 2D Spectroscopy of 1D Quantum Ising Magnets
• Spin dynamics of the generalized quantum spin compass chain
• Excitations of quantum Ising chain CoNb2O6 in low transverse field: quantitative description of bound states stabilized by off-diagonal exchange and applied field
• Spin dynamics of the $E_8$ particles
• Evolution of lattice, spin, and charge properties across the phase diagram of FeSe${}_{1-x}$S${}_x$
• Coupled dynamics of long-range and internal spin cluster order in Cu${}_2$OSeO${}_3$