Results 111 to 120 of about 2,625,439 (288)

Discrete symmetries control geometric mechanics in parallelogram-based origami. [PDF]

Proc Natl Acad Sci U S A, 2022
McInerney J, Paulino GH, Rocklin DZ.
europepmc   +1 more source

Local discrete symmetries from superstring derived models [PDF]

, 1996
Discrete and global symmetries play an essential role in many extensions of the Standard Model, for example, to preserve the proton lifetime, to prevent flavor changing neutral currents, etc.
Faraggi, A.E.
core   +1 more source

Lone‐Pair‐Induced Lattice Distortion in Lead‐Free Hybrid Perovskites for High‐Performance Nanogenerators

Advanced Functional Materials, EarlyView.
A lead‐free tin‐based hybrid perovskite is designed in which stereochemically active lone‐pair electrons on tin distort the crystal lattice and break its symmetry. Blended into a flexible polymer, the material converts pressure into electricity at milliwatt‐scale power density and continues working far below freezing, powering a commercial wristwatch ...
Majid Haji Bagheri, Asif Abdullah Khan, Md Fahim Al Fattah, Mahmoud Almadhoun, Shamaila Shahzadi, Aixi Pan, Md Soyaeb Hasan, Henry Wu, Arash Aghigh, Bhawna Bhawna, François Légaré, Vivek Maheshwari, Dayan Ban   +12 more
wiley   +1 more source

Discrete symmetries of Feynman integrals

Journal of High Energy Physics
We perform a comprehensive study of a certain class of discrete symmetries of families of Feynman integrals, defined as affine changes of variables that map different sectors of the family into each other.
Claude Duhr, Sara Maggio, Cathrin Semper, Sven F. Stawinski   +3 more
doaj   +1 more source

Dynamical versus variational symmetries: understanding Noether's first theorem [PDF]

, 2004
It is argued that awareness of the distinction between dynamical and variational symmetries is crucial to understanding the significance of Noether's 1918 work.
Holland, Peter, Brown, Harvey R.
core  

Intracrystalline Void‐Mediated Toughening of Brittle Crystals in Quail Eggshells

Advanced Functional Materials, EarlyView.
In quail eggshells, the high density and disordered arrangement of intracrystalline voids inhibit lattice cleavage, suppress long‐range crack propagation, and promote deformation twinning and quasi‐plasticity, serving as an essential toughening motif. We show that these voids remain within a narrow subcritical size range and therefore predominantly do ...
Jingxiao Zhong, Qihang Wang, Andre E. Vellwock, Sinuhe Perea Puente, Tingting Zhu, Jia Hui Lim, Kadda Medjoubi, Sebastian Hoerl, Erika Griesshaber, Wolfgang W. Schmahl, Yannicke Dauphin, Emeline Raguin, Peter Werner, Francesco Stellacci, Michael V. Swain, Peter Fratzl, Shahrouz Amini   +16 more
wiley   +1 more source

Non-invertible duality interfaces in field theories with exotic symmetries

Journal of High Energy Physics
In recent years, the concept of global symmetry has generalized considerably. Two dramatic examples of this generalization are the exotic symmetries that govern theories with fractons and non-invertible symmetries, which do not fuse according to a group ...
Ryan C. Spieler
doaj   +1 more source

Discrete R-symmetries and anomaly universality in heterotic orbifolds [PDF]

, 2014
We study discrete R-symmetries, which appear in the 4D low energy effective field theory derived from heterotic orbifold models. We derive the R-symmetries directly from the geometrical symmetries of the orbifolds.
Nana G. Cabo Bizet, Schmitz, Matthias, Kobayashi, T, Pena, Damian K. Mayorga, Cabo Bizet, NG, Parameswaran, SL, Zavala, I, Susha L. Parameswaran, Damián K. Mayorga Peña, Parameswaran, Susha L., Kobayashi, Tatsuo, Zavala, Ivonne, Schmitz, M, Zavala Carrasco, Ivonne, Matthias Schmitz, Bizet, Nana G. Cabo, Cabo Bizet, Nana G., Mayorga Peña, DK, Ivonne Zavala, Tatsuo Kobayashi, Ivonne Zavala Carrasco   +20 more
core   +1 more source

Multidimensional‐Encoded High‐Fidelity Spectrometers With a Floating‐Base Bipolar Junction

Advanced Functional Materials, EarlyView.
A floating‐base bipolar junction photodetector enables multidimensional spectral encoding through synergistic gate‐ and drain‐bias modulation of interfacial barrier matching. The resulting complementary spectral responses form a diverse, weakly correlated response matrix, enabling robust and high‐fidelity spectral reconstruction even at sub‐nanoampere ...
Sang‐Hyeon Lee, Junho Min, Yonas Tsegaye Megra, Min‐Hye Jeong, Hwi Je Woo, Jaewon Han, Junheon Ha, Gyunghyun Jang, Young Jae Song, Hyun‐Soo Ra, Hoon Hahn Yoon, Jong‐Soo Lee   +11 more
wiley   +1 more source

Yukawa textures from non-invertible symmetries [PDF]

Journal of High Energy Physics
Phenomenological aspects of non-invertible symmetries, in particular the flavor structure of quarks and leptons, are studied. We start with a ℤM discrete symmetry and gauge ℤ2 so as to obtain a non-invertible symmetry.
Tatsuo Kobayashi, Hajime Otsuka, M. Tanimoto   +2 more
semanticscholar   +1 more source