Results 61 to 70 of about 208,623 (316)

Exact Kerr-like solution and its shadow in a gravity model with spontaneous Lorentz symmetry breaking [PDF]

The European Physical Journal C, 2019
We obtain an exact Kerr-like black hole solution by solving the corresponding gravitational field equations in Einstein-bumblebee gravity model where Lorentz symmetry is spontaneously broken once a vector field acquires a vacuum expectation value ...
Chikun Ding, Chikun Ding, Changqing Liu, R. Casana, A. Cavalcante   +4 more
semanticscholar   +1 more source

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, Changfan Xu, Huaping Zhao, Yong Lei   +3 more
wiley   +1 more source

Prospects of Electric Field Control in Perpendicular Magnetic Tunnel Junctions and Emerging 2D Spintronics for Ultralow Energy Memory and Logic Devices

Advanced Functional Materials, EarlyView.
Electric control of magnetic tunnel junctions offers a path to drastically reduce the energy requirements of the device. Electric field control of magnetization can be realized in a multitude of ways. These mechanisms can be integrated into existing spintronic devices to further reduce the operational energy.
Will Echtenkamp, Brahmdutta Dixit, Yifei Yang, Deyuan Lyu, Thomas Peterson, Qi Jia, Yu‐Chia Chen, Jian‐Ping Wang   +7 more
wiley   +1 more source

Spontaneous scale symmetry breaking at high temperature

Journal of High Energy Physics, 2023
We consider a scale symmetric extension of the Standard Model Higgs scalar sector. The new sector, dilaton, is responsible for the generation of mass scales and may have geometric origin in the Weyl gravity R ~ 2 $$ {\overset{\sim }{R}}^2 $$ term.
Z. Lalak, P. Michalak
doaj   +1 more source

Kelvin-Helmholtz instability is the result of parity-time symmetry breaking

, 2018
Parity-Time (PT)-symmetry is being actively investigated as a fundamental property of observables in quantum physics. We show that the governing equations of the classical two-fluid interaction and the incompressible fluid system are PT-symmetric, and ...
Glasser, Alexander S., Qin, Hong, Xiao, Jianyuan, Zhang, Ruili   +3 more
core   +1 more source

Low‐Symmetry Weyl Semimetals: A Path to Ideal Topological States

Advanced Functional Materials, EarlyView.
This study presents a theoretical framework for realizing ideal Weyl semimetals, where Weyl nodes are well‐isolated at the Fermi level. The approach is exemplified in the low‐symmetry material Cu2SnSe3, which exhibits tunable topological phases, current‐induced orbital magnetization, and a strong circular photogalvanic effect, making it a promising ...
Darius‐Alexandru Deaconu, Varun Shah, Rodion Vladimirovich Belosludov, Mohammad Saeed Bahramy   +3 more
wiley   +1 more source

Spontaneous symmetry breaking and the Goldstone theorem in non-Hermitian field theories [PDF]

Physical Review D, 2018
We demonstrate the extension to parity-time (PT)-symmetric field theories of the Goldstone theorem, confirming that the spontaneous appearance of a field vacuum expectation value via minimization of the effective potential in a non-Hermitian model is ...
J. Alexandre, J. Ellis, P. Millington, Dries Seynaeve   +3 more
semanticscholar   +1 more source

Optimizing (1‐x) BiFeO3‐xCaTiO3 Perovskites: A Pathway to Efficient Flexible Energy Storage

Advanced Functional Materials, EarlyView.
Perovskite materials, like BFO CTO, are popular due to their high conductivity, low cost, and wide availability. In this work a symmetric electrochemical cell based on BFO‐CTO shows a charge of 3.356 C.cm⁻2, giving a specific capacitance of 2.79 mF.cm⁻2 at 1 mV.s⁻2.
Febin Paul, Shahina Shareef, Eric Kumi Barimah, Mustehsan Beg, Keng Goh, Gin Jose, Zhilun Lu, Libu Manjakkal   +7 more
wiley   +1 more source

Spontaneous Parity Violation in SUSY Strong Gauge Theory

, 2011
We suggest simple models of spontaneous parity violation in supersymmetric strong gauge theory. We focus on left-right symmetric model and investigate vacuum with spontaneous parity violation.
A Manohar, AE Nelson, AG Cohen, B Holdom, C Vafa, CS Aulakh, CS Aulakh, CT Hill, E Eichten, E Witten, G Senjanović, H Fukushima, Hiroshi Ohki, JA Evans, JC Pati, K Choi, K Yamawaki, K-I Izawa, KA Intriligator, KA Intriligator, KS Babu, L Susskind, MA Luty, MA Luty, MA Luty, ME Peskin, ME Peskin, N Seiberg, Naoyuki Haba, RN Mohapatra, RN Mohapatra, RN Mohapatra, RN Mohapatra, RN Mohapatra, RN Mohapatra, S Weinberg, T Aaltonen, TW Appelquist   +37 more
core   +1 more source

Surface Wrinkling of Plasma‐Exposed PDMS is Caused by Water Vapor Sorption: An Optical Environmental Sensor

Advanced Functional Materials, EarlyView.
Wrinkling of soft materials, such as polydimethylsiloxane (PDMS), underpins a myriad of technologies. Plasma‐oxidation of PDMS induces spontaneous wrinkling, which is canonically attributed to thermal expansion‐contraction of bilayers. Employing experiments and modelling, it is demonstrated that sorption of water vapor is instead responsible for ...
Zain Ahmad, Gunjan Tyagi, Shuning Xiang, Jerry Heng, Pedro Patrício, Paulo I. C. Teixeira, Christopher M. Stafford, Jack F. Douglas, João T. Cabral   +8 more
wiley   +1 more source