Results 61 to 70 of about 52,638 (215)
A Note on Characteristic Classes [PDF]
, 2006 This paper studies the relationship between the sections and the Chern or Pontrjagin classes of a vector bundle by the theory of connection.
Zhou, Jianwei
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Connecting the Many-Body Chern Number to Luttinger’s Theorem through Středa’s Formula
Physical Review Letters, 2023 6 ...
Lucila Peralta Gavensky +2 more
openaire +3 more sources
Locality of topological dynamics in Chern insulators
SciPost PhysicsA system having macroscopic patches in different topological phases has no well-defined global topological invariant. To treat such a case, the quantities labeling different areas of the sample according to their topological state are used, dubbed local ...
Anton Markov, Diana Golovanova, Alexander Yavorsky, Alexey Rubtsov
doaj +1 more source
Complete factorization in minimal N=4 $$ \mathcal{N}=4 $$ Chern-Simons-matter theory
Journal of High Energy Physics, 2018 We investigate an N=4UNk×UN+M−k $$ \mathcal{N} = 4\;\mathrm{U}{(N)}_k\times \mathrm{U}{\left(N+M\right)}_{-k} $$ Chern-Simons theory coupled to one bifundamental hypermultiplet by employing its partition function, which is given by 2N + M dimensional ...
Tomoki Nosaka, Shuichi Yokoyama
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On exotic consistent anomalies in (1+1)$d$: A ghost story
SciPost Physics, 2021 We revisit 't Hooft anomalies in (1+1)$d$ non-spin quantum field theory, starting from the consistency and locality conditions, and find that consistent U(1) and gravitational anomalies cannot always be canceled by properly quantized (2+1)$d$ classical ...
Chi-Ming Chang, Ying-Hsuan Lin
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Advanced Functional Materials, EarlyView.From a database of 170 pentagonal 2D materials, 4 candidates exhibiting altermagnetic ordering are screened. Furthermore, the spin‐splitting and unconventional boundary states in the pentagonal 2D altermagnetic monolayer MnS2 are investigated. A MnS2‐based altermagnetic tunneling junction is designed and, through ab initio quantum transport simulations,
Jianhua Wang +8 more
wiley +1 more source
Cosmological time and the constants of nature
Physics Letters B, 2021 We propose that cosmological time is effectively the conjugate of the constants of nature. Different definitions of time arise, with the most relevant related to the constant controlling the dynamics in each epoch. The Hamiltonian constraint then becomes
João Magueijo
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Electrically Tunable On‐Chip Topological Photonics with Integrated Carbon Nanotubes
Advanced Functional Materials, EarlyView.This work demonstrates electrically tunable on‐chip topological THz devices by integrating 2D carbon nanotube (CNT) sheets with valley‐Hall photonic crystals, enabling broadband transmission modulation (71% modulation depth) and tunable narrowband filtering (0.54 GHz shift) through electrically induced thermal tuning. This advancement paves the way for
Jifan Yin +7 more
wiley +1 more source
Symmetric space λ-model exchange algebra from 4d holomorphic Chern-Simons theory
Journal of High Energy Physics, 2021 We derive, within the Hamiltonian formalism, the classical exchange algebra of a lambda deformed string sigma model in a symmetric space directly from a 4d holomorphic Chern-Simons theory.
David M. Schmidtt
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$SO/Sp$ Chern-Simons Gauge Theories At Large $N$, $SO/Sp$ Penner Models And The Gauge Group Volumes
, 2012 We construct a deformed $SO/Sp$ Penner generating function responsible for the close connection between $SO/Sp$ Chern-Simons gauge theories at large $N$ and the $SO/Sp$ Penner models.
Chair, Noureddine, Dalabeeh, Mohammad
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