Towards Classification of Fracton Phases: The Multipole Algebra
By A. Gromov. Physical Review X, 2018
181 citations recorded by the source corpus.
We present an effective field theory approach to the Fracton phases. The approach is based the notion of a multipole algebra. It is an extension of space(-time) symmetries of a charge-conserving matter that includes global symmetries responsible for the conservation of various components of the multipole moments of the charge density. We explain how to construct field theories invariant under the action of the algebra. These field theories generally break rotational invariance and exhibit anisotropic scaling. We further explain how to partially gauge the multipole algebra. Such gauging makes the symmetries responsible for the conservation of multipole moments local, while keeping rotation and translations symmetries global. It is shown that upon such gauging one finds the symmetric tensor gauge theories, as well as the generalized gauge theories discussed recently in the literature. The outcome of the gauging procedure depends on the choice of the multipole algebra. In particular, we show how to construct an effective theory for the $U(1)$ version of the Haah code based on the principles of symmetry and provide a two dimensional example with operators supported on a Sierpinski triangle. We show that upon condensation of charged excitations Fracton phases of both types as well as various SPTs emerge. Finally, the relation between the present approach and the formalism based on polynomials over finite fields is discussed.
Subfields: Atomic and Molecular Physics, and Optics, Geometry and Topology, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/e74520ff4dd5702dab7c1e0c05584d8052c41c49
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Citations in the corpus
- Generalized Symmetries in Condensed Matter (2022, unknown): “A closely-related concept is that of multipole symmetries ( e.g. (73, 74, 75, 76, 77, 78)).”
- Fracton hydrodynamics (2020, background): “[52] Andrey Gromov, “Towards classification of fracton phases: the multipole algebra,” Physical Review X 9, 031035 (2019).”
- Ergodicity Breaking Arising from Hilbert Space Fragmentation in Dipole-Conserving Hamiltonians (2019, background): “operator P does not commute with spatial translations and changes sign under inversion; thus, it is not an internal symmetry [55].”
- Fracton phases of matter (2020, methodology): “A number of possible approaches to this challenge have been discussed in the literature thus far from the spirit of BF-type theory [5, 28–30, 42, 51, 52, 61, 63–66].”