Vacuum alignment with and without elementary scalars
نویسندگان
چکیده
منابع مشابه
Higgs Model without Elementary Scalars
A model of interaction of massless vector and spinor fields is considered. With the use of Bogolyubov quasi-average method we study a possibility of a dy-namical breaking of the initial symmetry. Assuming the existence of effective cutoff Λ, we show, that there exists a solution, which breaks gauge symmetry of the theory. Instead of Higgs scalars fermion-antifermion tachion bound states are pre...
متن کاملDynamical Higgs Mechanism without Elementary Scalars: A Lesson from Instantons
The generation of gauge–dependent fermion vacuum condensates in Yang– Mills theory would dynamically break the gauge symmetry and thus provide an alternative to the Higgs mechanism in unified theories. We explore a simple example: instanton-induced quark pair (diquark) condensation in QCD with 2 flavors and Nc colors. We do find diquark condensates in the vacuum, but only for Nc = 2, where they...
متن کاملReverse ) Engineering Vacuum Alignment
In the presence of spontaneous symmetry breaking, the alignment of the vacuum with respect to the gauge group is often controlled by quadratically divergent operators in the low energy non-linear sigma model. In principle the magnitudes and signs of these operators can be changed by making different assumptions about the ultraviolet physics, but in practice all known ways of regulating these th...
متن کاملVacuum defects without a vacuum
Topological defects can arise in symmetry breaking models where the scalar field potential V (φ) has no minima and is a monotonically decreasing function of |φ|. The properties of such vacuumless defects are quite different from those of the “usual” strings and monopoles. In some models such defects can serve as seeds for structure formation, or produce an appreciable density of miniblack holes...
متن کاملTransversely Isotropic Magneto-Visco Thermoelastic Medium with Vacuum and without Energy Dissipation
In the present investigation the disturbances in a homogeneous transversely isotropic magneto-Visco thermoelastic rotating medium with two temperature due to thermomechanical sources has been addressed. The thermoelasticity theories developed by Green-Naghdi (Type II and Type III) both with and without energy dissipation has been applied to the thermomechanical sources. The Laplace and Fourier ...
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 D
سال: 2016
ISSN: 2470-0010,2470-0029
DOI: 10.1103/physrevd.94.075015