Non-universal Thermal Hall Responses in Fractional Quantum Hall Droplets
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866908603334524928 |
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| author | Tan, Fei Wang, Yuzhu Wang, Xinghao Yang, Bo |
| author_facet | Tan, Fei Wang, Yuzhu Wang, Xinghao Yang, Bo |
| contents | We analytically compute the thermal Hall conductance (THC) of fractional quantum Hall droplets under realistic conditions that go beyond the idealized linear edge theory with conformal symmetry. Specifically, we consider finite-size effects at low temperature, nonzero self-energies of quasiholes, and general edge dispersions. We derive measurable corrections in THC that are consistent with the experimental observables. Although the quantized THC is commonly regarded as a topological invariant that is independent of edge confinement, our results show that this quantization remains robust only for arbitrary edge dispersion in the thermodynamic limit. Furthermore, the THC contributed by Abelian modes can become extremely sensitive to finite-size effects and irregular confining potentials in any realistic experimental system. In contrast, non-Abelian modes show robust THC signatures under perturbations, indicating an intrinsic stability of non-Abelian anyons. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_14058 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Non-universal Thermal Hall Responses in Fractional Quantum Hall Droplets Tan, Fei Wang, Yuzhu Wang, Xinghao Yang, Bo Mesoscale and Nanoscale Physics Strongly Correlated Electrons Mathematical Physics We analytically compute the thermal Hall conductance (THC) of fractional quantum Hall droplets under realistic conditions that go beyond the idealized linear edge theory with conformal symmetry. Specifically, we consider finite-size effects at low temperature, nonzero self-energies of quasiholes, and general edge dispersions. We derive measurable corrections in THC that are consistent with the experimental observables. Although the quantized THC is commonly regarded as a topological invariant that is independent of edge confinement, our results show that this quantization remains robust only for arbitrary edge dispersion in the thermodynamic limit. Furthermore, the THC contributed by Abelian modes can become extremely sensitive to finite-size effects and irregular confining potentials in any realistic experimental system. In contrast, non-Abelian modes show robust THC signatures under perturbations, indicating an intrinsic stability of non-Abelian anyons. |
| title | Non-universal Thermal Hall Responses in Fractional Quantum Hall Droplets |
| topic | Mesoscale and Nanoscale Physics Strongly Correlated Electrons Mathematical Physics |
| url | https://arxiv.org/abs/2509.14058 |