Point group symmetry and deformation-induced symmetry breaking of superlattice materials
نویسندگان
چکیده
منابع مشابه
Symmetry, Symmetry Breaking and Topology
The ground state of a system with symmetry can be described by a group G. This symmetry groupG can be discrete or continuous. Thus for a crystalG is a finite group while for the vacuum state of a grand unified theory G is a continuous Lie group. The ground state symmetry described by G can change spontaneously from G to one of its subgroups H as the external parameters of the system are modifie...
متن کاملDecoherence induced spontaneous symmetry breaking
We study time dependence of exchange symmetry properties of Bell states when two-qubits interact with local baths having identical parameters. In case of classical noise, we consider a decoherence Hamiltonian which is invariant under swapping the first and second qubits. We find that as the system evolves in time, two of the three symmetric Bell states preserve their qubit exchange symmetry wit...
متن کاملSymmetry breaking via fermion 4-point functions
We construct the effective action and gap equations for nonperturbative fermion 4-point functions. Our results apply to situations in which fermion masses can be ignored, which is the case for theories of strong flavor interactions involving standard quarks and leptons above the electroweak scale. The structure of the gap equations is different from what a naive generalization of the 2-point ca...
متن کاملSymmetry and Symmetry Breaking in Electrostatic MEMS
The use of electrostatic forces to provide actuation is a method of central importance in microelectromechanical systems (MEMS) and is of growing importance in nanoelectromechanical systems (NEMS). The study of electrostatic actuation has led to numerous interesting experimental, theoretical, and numerical results. Yet, surprisingly, even simple electrostatically actuated systems have secrets t...
متن کاملChiral Symmetry and Chiral Symmetry Breaking*
Lectures presented at the session on " Recent Developments in Quantum Field Theory and Statistical Mechanics " of the Les Houches Summer School of Theoretical Physics August 1982 *Nork supported by the
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
سال: 2015
ISSN: 1364-5021,1471-2946
DOI: 10.1098/rspa.2015.0125