Results 21 to 30 of about 1,685,988 (224)
On the geometry of lambda-symmetries and PDE reduction [PDF]
Journal of Physics A: Mathematical and General, 2004 We give a geometrical characterization of $ $-prolongations of vector fields, and hence of $ $-symmetries of ODEs. This allows an extension to the case of PDEs and systems of PDEs; in this context the central object is a horizontal one-form $ $, and we speak of $ $-prolongations of vector fields and $ $-symmetries of PDEs.
Giuseppe Gaeta, Paola Morando
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The geometry of mirror symmetry
, 2005 11 pages of "Encyclopaedia of Mathematical Physics"
Richard Thomas
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Quantum Geometry Induced Nonlinear Transport in Altermagnets. [PDF]
Physical Review Letters, 2023 Quantum geometry plays a pivotal role in the second-order response of PT-symmetric antiferromagnets. Here we study the nonlinear response of 2D altermagnets protected by C_{n}T symmetry and show that their leading nonlinear response is third order ...
Yuan Fang +2 more
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Effect of the Metal Transfer Mode on the Symmetry of Bead Geometry in WAAM Aluminum
Symmetry, 2021 The symmetrical nature in the case of wall fabrication by wire arc additive manufacturing (WAAM) has been observed in the literature, but it has not been studied as a source of knowledge. This paper focuses on the comparative study of three drop transfer
F. Veiga +3 more
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Time-reversal symmetry-breaking charge order in a kagome superconductor [PDF]
Nature, 2021 The kagome lattice1, which is the most prominent structural motif in quantum physics, benefits from inherent non-trivial geometry so that it can host diverse quantum phases, ranging from spin-liquid phases, to topological matter, to intertwined orders2–8
C. Mielke +19 more
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Rays, waves, SU(2) symmetry and geometry: toolkits for structured light
Journal of Optics, 2021 Structured light refers to the ability to tailor optical patterns in all its degrees of freedom, from conventional 2D transverse patterns to exotic forms of 3D, 4D, and even higher-dimensional modes of light, which break fundamental paradigms and open ...
Yijie Shen
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Experimental Realization of Geometry-Dependent Skin Effect in a Reciprocal Two-Dimensional Lattice. [PDF]
Physical Review Letters, 2023 Recent studies of non-Hermitian periodic lattices unveiled the non-Hermitian skin effect (NHSE), in which the bulk modes under the periodic boundary conditions (PBC) become skin modes under open boundary conditions. The NHSE is a topological effect owing
Wen Wang +4 more
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The Branes Behind Generalized Symmetry Operators [PDF]
Fortschritte der Physik, 2022 The modern approach to m‐form global symmetries in a d‐dimensional quantum field theory (QFT) entails specifying dimension d−m−1$d-m-1$ topological generalized symmetry operators which non‐trivially link with m‐dimensional defect operators.
J. Heckman +3 more
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Geometry symmetry-free and higher-order optical bound states in the continuum
Nature Communications, 2021 Geometrical symmetry plays a significant role in implementing robust, symmetry-protected, bound states in the continuum (BICs). However, this benefit is only theoretical in many cases since fabricated samples’ unavoidable imperfections may easily break ...
Qingjia Zhou +6 more
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JTK (Jurnal Tadris Kimiya), 2023 Most chemical concepts are abstract, hierarchical, and constructed from basic to complex concepts. Lewis structure, VSEPR theory, molecular geometry, and molecular symmetry have hierarchical idea.
Habiddin Habiddin +2 more
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