Results 11 to 20 of about 14,974,239 (304)

Symmetry group factorization reveals the structure-function relation in the neural connectome of Caenorhabditis elegans. [PDF]

open access: yesNat Commun, 2019
The neural connectome of the nematode Caenorhabditis elegans has been completely mapped, yet in spite of being one of the smallest connectomes (302 neurons), the design principles that explain how the connectome structure determines its function remain ...
Morone F, Makse HA.
europepmc   +3 more sources

Non-expanding horizons: multipoles and the symmetry group [PDF]

open access: yesJournal of High Energy Physics, 2022
It is well-known that blackhole and cosmological horizons in equilibrium situations are well-modeled by non expanding horizons (NEHs) [1–3]. In the first part of the paper we introduce multipole moments to characterize their geometry, removing the ...
Abhay Ashtekar   +3 more
doaj   +2 more sources

Higher-group symmetry in finite gauge theory and stabilizer codes [PDF]

open access: yesSciPost Physics, 2022
A large class of gapped phases of matter can be described by topological finite group gauge theories. In this paper, we show how such gauge theories possess a higher-group global symmetry, which we study in detail. We derive the $d$-group global symmetry
Maissam Barkeshli, Yu-An Chen, Po-Shen Hsin, Ryohei Kobayashi
doaj   +2 more sources

Topological Phases Protected by Point Group Symmetry [PDF]

open access: yesPhysical Review X, 2017
We consider symmetry-protected topological (SPT) phases with crystalline point group symmetry, dubbed point group SPT (pgSPT) phases. We show that such phases can be understood in terms of lower-dimensional topological phases with on-site symmetry and ...
Hao Song   +3 more
doaj   +2 more sources

Higher group Weyl symmetry

open access: yesPhysics Letters B
We study a higher group analog of the Weyl symmetry in four-dimensional quantum field theories. A typical example is that the modified transformation of the 2-form background gauge field replaces the operator-valued Weyl anomaly associated with gauging ...
Yu Nakayama
doaj   +4 more sources

Spglib: a software library for crystal symmetry search

open access: yesScience and Technology of Advanced Materials: Methods
A computer algorithm to search the symmetries of crystal structures, as implemented in the spglib code, is described. An iterative algorithm is employed to robustly identify space group types, tolerating a certain amount of distortion in the crystal ...
Atsushi Togo   +2 more
doaj   +2 more sources

Symmetry Group Equivariant Architectures for Physics [PDF]

open access: yesarXiv.org, 2022
Physical theories grounded in mathematical symmetries are an essential component of our understanding of a wide range of properties of the universe. Similarly, in the domain of machine learning, an awareness of symmetries such as rotation or permutation ...
A. Bogatskiy   +10 more
semanticscholar   +1 more source

Spin-Group Symmetry in Magnetic Materials with Negligible Spin-Orbit Coupling [PDF]

open access: yesPhysical Review X, 2021
Symmetry formulated by group theory plays an essential role with respect to the laws of nature, from fundamental particles to condensed matter systems.
Pengfei Liu   +4 more
semanticscholar   +1 more source

Modified MIT bag Models—part I: Thermodynamic consistency, stability windows and symmetry group

open access: yesPhysica Scripta, 2021
In this work we study different variations of the MIT bag model. We start with the so called non-ideal bag model and discuss it in detail. Then we implement a vector interaction in the MIT bag model that simulates a meson exchange interaction and fix the
L. Lopes, Carline Biesdorf, D. Menezes
semanticscholar   +1 more source

Symmetry Analysis and Conservation Laws for a Time-Fractional Generalized Porous Media Equation

open access: yesMathematics, 2022
The symmetry group method is applied to study a class of time-fractional generalized porous media equations with Riemann–Liouville fractional derivatives. All point symmetry groups and the corresponding optimal subgroups are determined.
Tianhang Gong, Wei Feng, Songlin Zhao
doaj   +1 more source

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