Results 71 to 80 of about 105,729 (287)
Simplest phonons and pseudo-phonons in field theory
European Physical Journal C: Particles and Fields, 2019 We study the emergence of Nambu–Goldstone modes due to broken translation symmetry in field theory. Purely spontaneous breaking yields a massless phonon which develops a mass upon introducing a perturbative explicit breaking.
Daniele Musso
doaj +1 more source
On the effective action for scalars in a general manifold to any loop order
Physics Letters B, 2023 Functional methods and a derivative expansion are employed for laying out a procedure to compute the effective action to any loop order, for scalar fields parametrising an arbitrary Riemannian manifold, while maintaining explicit field-space covariance ...
Rodrigo Alonso, Mia West
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Conformal symmetry and its breaking in two dimensional Nearly Anti-de-Sitter space [PDF]
, 2016 We study a two dimensional dilaton gravity system, recently examined by Almheiri and Polchinski, which describes near extremal black holes, or more generally, nearly $AdS_2$ spacetimes.
J. Maldacena, D. Stanford, Zhenbin Yang
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan +9 more
wiley +1 more source
Journal of High Energy Physics, 2019 In the weak coupling limit of SUN Yang-Mills theory and the O(N) vector model, explicit state counting allows us to demonstrate the existence of a partially deconfined phase: M of N colors deconfine, and M N $$ \frac{M}{N} $$ gradually grows from zero ...
Masanori Hanada +3 more
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Probing maximal zero textures with broken cyclic symmetry in inverse seesaw
Nuclear Physics B, 2016 Within the framework of inverse seesaw mechanism we investigate neutrino mass matrices invariant under cyclic symmetry (Z3) with maximal zero texture (6 zero textures).
Rome Samanta, Ambar Ghosal
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Advanced Functional Materials, EarlyView.Sub‐monolayer titania grafted onto mesoporous silica enables solvent‐free photocatalytic upgrading of furfural and cyclopentanone into jet fuel precursors. Advanced spectroscopic methods reveal tunable surface speciation, acidity, and bandgaps, enhancing catalytic efficiency.
Mark A. Isaacs +12 more
wiley +1 more source
Quantum cluster approach to the topological invariants in correlated Chern insulators
New Journal of Physics, 2019 We detect the topological properties of Chern insulators with strong Coulomb interactions by use of cluster perturbation theory and variational cluster approach.
Zhao-Long Gu, Kai Li, Jian-Xin Li
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European Physical Journal C: Particles and Fields, 2022 We construct a holographic effective superconducting theory by considering a special gauge-axion coupling. In the normal state, we observe that a peak emerges in the mid-IR in the AC conductivity for certain strength of broken translations and the gauge ...
Yan Liu +3 more
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Atomic Size Misfit for Electrocatalytic Small Molecule Activation
Advanced Functional Materials, EarlyView.This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong +3 more
wiley +1 more source