Spontaneous breaking of a discrete time-translation symmetry
نویسندگان
چکیده
Spontaneous symmetry breaking (SSB) is a key concept in physics that for decades has played crucial role the description of many physical phenomena large number different areas, like particle physics, cosmology, and condensed-matter physics. SSB thus an ubiquitous connecting several, both "high" "low" energy, areas textbooks describe its basic features great detail. However, to study dynamics laboratory extremely difficult. In example, tiny external disturbances cause preference particular configuration typically those cannot be avoided experiments. Notwithstanding these complications, here we experiment, which directly observe spontaneous temporal phase driven system with respect drive into two distinct values differing by $\pi$.
منابع مشابه
Superfluidity and space-time translation symmetry breaking.
I present a simple model that exhibits a temporal analogue of superconducting crystalline (Larkin-Ovchinnikov-Ferrell-Fulde) ordering, with a time-dependent order parameter. I sketch designs for minimally dissipative ac circuits, all based on time translation symmetry (τ) invariant dynamics, exploiting weak links (Josephson effects). These systems violate τ spontaneously. I also discuss effecti...
متن کاملNonperturbative Spontaneous Symmetry Breaking
One of the most astonishing results of quantum field theory is spontaneous symmetry breaking. One can say that it is the situation when something arises from the quantization. This means that on the quantum level one has something that was not present on the classical level. Coleman and Weinberg [1] write : “ . . . higher-order effects may qualitatively change the character of a physical theory...
متن کاملTHE FRANK KINETIC MODEL FOR SPONTANEOUS CHIRAL SYMMETRY BREAKING WITH VARIABLE CONCENTRATION OF THE ACHIRAL SUBSTRATE
This paper considers the possibility of spontaneous transition of aracemic mixture (composed of equal amounts of two enantiomeric species, say L and D) into a monochiral state (in which only one enantiomer, say L, is present). Transitions of this kind have been recently experimentally observed. A plausible approach to this phenomenon is a model put forward by Frank, based on simple laws of ...
متن کاملFermion Systems in Discrete Space-Time – Outer Symmetries and Spontaneous Symmetry Breaking
A systematic procedure is developed for constructing fermion systems in discrete space-time which have a given outer symmetry. The construction is illustrated by simple examples. For the symmetric group, we derive constraints for the number of particles. In the physically interesting case of many particles and even more spacetime points, this result shows that the permutation symmetry of discre...
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: Physical review
سال: 2021
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physreva.104.023318