Precision study of the massive Schwinger model near quantum criticality
Fuente:
arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866915045394350080 |
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| author | Cruz, Erick Arguello Tarnopolsky, Grigory Xin, Yuan |
| author_facet | Cruz, Erick Arguello Tarnopolsky, Grigory Xin, Yuan |
| contents | We perform a numerical analysis of the massive Schwinger model in the presence of a background electric field. Using the Density Matrix Renormalization Group (DMRG) approach, we efficiently compute the spectrum of the Schwinger model on a staggered lattice with up to 3000 qubits. As a result, we achieve a precise computation of the critical mass of the massive Schwinger model to five digits using four different 'criticality criteria', observing perfect agreement among them. Additionally, we discuss the effect of a four-fermion operator deformation of the Schwinger model and compute the critical mass for various values of the deformation parameter. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_01902 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Precision study of the massive Schwinger model near quantum criticality Cruz, Erick Arguello Tarnopolsky, Grigory Xin, Yuan High Energy Physics - Theory Strongly Correlated Electrons High Energy Physics - Lattice We perform a numerical analysis of the massive Schwinger model in the presence of a background electric field. Using the Density Matrix Renormalization Group (DMRG) approach, we efficiently compute the spectrum of the Schwinger model on a staggered lattice with up to 3000 qubits. As a result, we achieve a precise computation of the critical mass of the massive Schwinger model to five digits using four different 'criticality criteria', observing perfect agreement among them. Additionally, we discuss the effect of a four-fermion operator deformation of the Schwinger model and compute the critical mass for various values of the deformation parameter. |
| title | Precision study of the massive Schwinger model near quantum criticality |
| topic | High Energy Physics - Theory Strongly Correlated Electrons High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2412.01902 |