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Date
2024Type
- Conference Paper
ETH Bibliography
yes
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Abstract
Other than the commonly used Wilson’s regularization of quantum field theories (QFTs), there is a growing interest in regularizations that explore lattice models with a strictly finite local Hilbert space, in anticipation of the upcoming era of quantum simulations of QFTs. A notable example is Euclidean qubit regularization, which provides a natural way to recover continuum QFTs that emerge via infrared fixed points of lattice theories. Can such regularizations also capture the physics of ultraviolet fixed points? We present a novel regularization of the asymptotically free massive continuum QFT that emerges at the Berezenski-Kosterlitz-Thouless (BKT) transition through a hard core loop-gas model, discussing the advantages this model provides compared to traditional regularizations. In particular, we demonstrate that without the need for fine-tuning, it can reproduce the universal step-scaling function of the classical lattice XY model in the massive phase as we approach the phase transition. Show more
Publication status
publishedExternal links
Book title
Proceedings of The 40th International Symposium on Lattice Field TheoryJournal / series
PoS: Proceedings of ScienceVolume
Publisher
SISSAEvent
Organisational unit
09738 - Krstic Marinkovic, Marina / Krstic Marinkovic, Marina
Related publications and datasets
Is new version of: https://doi.org/10.48550/arXiv.2401.10157
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ETH Bibliography
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