Browsing by Subject "Quebra espontanea de simetrias"
Now showing items 1-9 of 9
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Chiral bosons and improper constraints
(1994) [Journal article]We argue that a consistent quantization of the Floreanini-Jackiw model, as a constrained system, should start by recognizing the improper nature of the constraints. Then, each boundary condition defines a problem which ... -
Degrees of symmetry in quantum field theories
(1972) [Journal article]A hierarchy of possible symmetries in quantum field theory is defined, which reaches from a purely mathematical invariance to the conventional physical invariance, including the commonly discussed type of spontaneously ... -
Estudo de um modelo mínimo para a Matéria Escura
(2012) [Work completion of graduation]Fazemos uma revisãoo do modelo padrão das interações eletrofracas, devido a Glashow, Weinberg e Salam, o qual constitui a base para extensões do Modelo Padrão (MP) que incluam WIMPs (Weakly Interacting Massive Particles). ... -
Quebra espontânea de simetrias em eletrodinâmica quântica
(1971) [Thesis]Estuda-se a Eletrodinâmica Quântica realçando suas propriedades como uma teoria de operadores campo no espaço-tempo, em lugar de considerá-la apenas como uma teoria para as funções de Green como se faz usualmente. O objetivo ... -
Renormalization and gauge invariance in quantum electrodynamics
(1970) [Journal article]The connection between the field theory and the perturbation expansion of quantum electrodynamics is studied. As a starting point the usual Lagrangian is taken but with bare electron mass and the renormalization constant ... -
Rotating Skyrmion in 2+1 dimensions
(1996) [Journal article]The collective rotation of the Skyrmion in two-dimensional space is considered. In contradistinction to the three-dimensional case, inertial effects do not spoil the hedgehog form and can, therefore, be investigated ... -
Scaling violation and shadowing corrections at HERA
(1999) [Journal article]We study the value of shadowing corrections (SC) in the HERA kinematic region in the Glauber{ Mueller approach. Since the Glauber{Mueller approach was proven in perturbative quantum chromodynamics (QCD) in the double-logarithmic ... -
Symmetry breaking in d-dimensional self-gravitating systems
(2013) [Journal article]Systems with long-range interactions, such as self-gravitating clusters and magnetically confined plasmas, do not relax to the usual Boltzmann-Gibbs thermodynamic equilibrium, but become trapped in quasistationary states ... -
The 125 GeV boson : a composite scalar?
(2013) [Journal article]Assuming that the 125 GeV particle observed at the LHC is a composite scalar and responsible for the electroweak gauge symmetry breaking, we consider the possibility that the bound state is generated by a non-Abelian gauge ...
