Results 41 to 50 of about 21,384 (300)

Massive Dirac fermion observed in lanthanide-doped topological insulator thin films

, 2015
This publication arises from research funded by the John Fell Oxford University Press (OUP) Research Fund, a DARPA MESO Project (No. N66001-11-1-4105), and funding from the European Union Seventh Framework Programme under Grant Agreement 312483 – ESTEEM2
Srot, V, Van Aken, P. A., Collins-McIntyre, LJ, Chen, YL, Harrison, SE, Collins-McIntyre, Liam James, Kellock, A., Parkin, S.S.P., Chen, Schönherr, P, Vailionis, A., Chen, Y. L., Schönherr, Piet, Hesjedal, Thorsten, Pushp, A, Pushp, A., Harris, J.S., Srot, V., Hesjedal, T., Zhou, B, Collins-McIntyre, L., Parkin, S. S P, van Aken, P.A., Harris, J. S., Kellock, A.J., Harris, J., Kellock, AJ, van Aken, P., Hesjedal, T, Parkin, S., Parkin, SSP, Harrison, S., Collins-McIntyre, Liam J., Zhou, B., Harrison, S. E., Harris, JS, Kellock, A. J., Schönherr, P., van Aken, PA, Vailionis, A, Harrison, S.E.   +40 more
core   +1 more source

From gauge to higher gauge models of topological phases

Journal of High Energy Physics, 2018
We consider exactly solvable models in (3+1)d whose ground states are described by topological lattice gauge theories. Using simplicial arguments, we emphasize how the consistency condition of the unitary map performing a local change of triangulation is
Clement Delcamp, Apoorv Tiwari
doaj   +1 more source

Exotic field theories for (hybrid) fracton phases from imposing constraints in foliated field theory

Journal of High Energy Physics, 2023
Fracton phases of matter are gapped phases of matter that, by dint of their sensitivity to UV data, demand non-standard quantum field theories to describe them in the IR. Two such approaches are foliated quantum theory and exotic field theory.
Ryan C. Spieler
doaj   +1 more source

Topological states of quantum matter

Physics, 2008
Electrons in graphene can be described by the relativistic Dirac equation for massless fermions and exhibit a host of unusual properties. The surfaces of certain band insulators—called topological insulators—can be described in a similar way, leading to an exotic metallic surface on an otherwise ‘ordinary’ insulator.
openaire   +2 more sources

Dirac surface states and nature of superconductivity in noncentrosymmetric BiPd

, 2015
In non-magnetic bulk materials, inversion symmetry protects the spin degeneracy. If the bulk crystal structure lacks a centre of inversion, however, spin-orbit interactions lift the spin degeneracy, leading to a Rashba metal whose Fermi surfaces exhibit ...
Yaresko, Alexander, Peets, Darren C., Sun, Zhixiang, Maldonado, Ana Isabel, Wahl, Peter, Enayat, Mostafa, Lithgow, Calum, Yelland, Ed, Schnyder, Andreas P.   +8 more
core   +1 more source

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

FEBS Open Bio, EarlyView.
Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young, Omar Arias‐Gaguancela, Fiona Gibson, Morgan Grainger, Jodie Score, Amit Nathubhai, Mauricio Cafiero, Lee Richard Machado   +7 more
wiley   +1 more source

Excitations in strict 2-group higher gauge models of topological phases

Journal of High Energy Physics, 2020
We consider an exactly solvable model for topological phases in (3+1) d whose input data is a strict 2-group. This model, which has a higher gauge theory interpretation, provides a lattice Hamiltonian realisation of the Yetter homotopy 2-type topological
Alex Bullivant, Clement Delcamp
doaj   +1 more source

One dimensional gapped quantum phases and enriched fusion categories

Journal of High Energy Physics, 2022
In this work, we use Ising chain and Kitaev chain to check the validity of an earlier proposal in arXiv:2011.02859 that enriched fusion (higher) categories provide a unified categorical description of all gapped/gapless quantum liquid phases, including ...
Liang Kong, Xiao-Gang Wen, Hao Zheng
doaj   +1 more source

Unraveling 4‐Phenylbutyrate's Therapeutic Role in SLC6A1 Disorders: Pharmacochaperoning Over HDAC Inhibition

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Variants in SLC6A1, encoding the GABA transporter 1 (GAT‐1), cause epilepsy, autism spectrum disorder, and developmental delay via loss of GABA uptake, impaired trafficking, and ER retention. We previously found that 4‐Phenylbutyrate (PBA), an FDA‐approved drug, restores GABA uptake and reduces seizures in SLC6A1‐related disorders ...
Melissa B. DeLeeuw, Karishma Randhave, Ekta Anand, Ziang (Debbie) Song, Wangzhen Shen, Jing‐Qiong Kang   +5 more
wiley   +1 more source

On 2-form gauge models of topological phases

Journal of High Energy Physics, 2019
We explore 2-form topological gauge theories in (3+1)d. These theories can be constructed as sigma models with target space the second classifying space B 2 G of the symmetry group G, and they are classified by cohomology classes of B 2 G.
Clement Delcamp, Apoorv Tiwari
doaj   +1 more source