scholarly journals Towards a dual spin network basis for (3+1)d lattice gauge theories and topological phases

2018 ◽  
Vol 2018 (10) ◽  
Author(s):  
Clement Delcamp ◽  
Bianca Dittrich
Universe ◽  
2020 ◽  
Vol 6 (7) ◽  
pp. 97 ◽  
Author(s):  
William J. Cunningham ◽  
Bianca Dittrich ◽  
Sebastian Steinhaus

Tensor network methods are powerful and efficient tools for studying the properties and dynamics of statistical and quantum systems, in particular in one and two dimensions. In recent years, these methods have been applied to lattice gauge theories, yet these theories remain a challenge in ( 2 + 1 ) dimensions. In this article, we present a new (decorated) tensor network algorithm, in which the tensors encode the lattice gauge amplitude expressed in the fusion basis. This has several advantages—firstly, the fusion basis does diagonalize operators measuring the magnetic fluxes and electric charges associated to a hierarchical set of regions. The algorithm allows therefore a direct access to these observables. Secondly the fusion basis is, as opposed to the previously employed spin network basis, stable under coarse-graining. Thirdly, due to the hierarchical structure of the fusion basis, the algorithm does implement predefined disentanglers. We apply this new algorithm to lattice gauge theories defined for the quantum group SU ( 2 ) k and identify a weak and a strong coupling phase for various levels k . As we increase the level k , the critical coupling g c decreases linearly, suggesting the absence of a deconfining phase for the continuous group SU ( 2 ) . Moreover, we illustrate the scaling behaviour of the Wilson loops in the two phases.


2019 ◽  
Vol 99 (1) ◽  
Author(s):  
G. Magnifico ◽  
D. Vodola ◽  
E. Ercolessi ◽  
S. P. Kumar ◽  
M. Müller ◽  
...  

1984 ◽  
Vol 148 (4-5) ◽  
pp. 331-333
Author(s):  
V.M. Emelyanov ◽  
S.V. Petrovsky ◽  
I.L. Rozental

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
Zohreh Davoudi ◽  
Mohammad Hafezi ◽  
Christopher Monroe ◽  
Guido Pagano ◽  
Alireza Seif ◽  
...  

2013 ◽  
Vol 870 (1) ◽  
pp. 159-175 ◽  
Author(s):  
O. Borisenko ◽  
V. Chelnokov ◽  
G. Cortese ◽  
M. Gravina ◽  
A. Papa ◽  
...  

1993 ◽  
Vol 48 (5) ◽  
pp. 2290-2298 ◽  
Author(s):  
Howard D. Trottier ◽  
R. M. Woloshyn

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