Renormalisation group flow and kaon condensation
نویسندگان
چکیده
منابع مشابه
Non-Perturbative Renormalisation and Kaon Physics
Due to the difficulty of putting the Standard Model on the lattice for technical (MW,Z >> 1 a ) and theoretical reasons (the presence of the Wilson term breaks the chiral gauge invariance) we must integrate analytically the heavy degrees of freedom (W ′ s, Z ′ s). Using second order Weak Interaction perturbation theory, we get for the effective low energy hamiltonian density of non-leptonic dec...
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We consider QCD at a nonzero chemical potential for strangeness. At a critical value of the chemical potential equal to the kaon mass, kaon condensation occurs through a continuous phase transition. We show that in the limit of exact isospin symmetry a Goldstone boson with the dispersion relation E ∼ p appears in the kaon condensed phase. At the same time, the number of the Goldstone bosons is ...
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It is argued that renormalisation group flow can be interpreted as being a Hamiltonian vector flow on a phase space which consists of the couplings of the theory and their conjugate “momenta”, which are the vacuum expectation values of the corresponding composite operators. The Hamiltonian is linear in the conjugate variables and can be identified with the vacuum expectation value of the trace ...
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We discuss the kaon-nucleon interaction and its consequences for the change of the properties of the kaon in the medium. The onset of kaon condensation in neutron stars under various scenarios as well its effects for neutron star properties are reviewed.
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Several functional renormalisation group (RG) equations including Polchinski flows and Exact RG flows are compared from a conceptual point of view and in given truncations. Similarities and differences are highlighted with special emphasis on stability properties. The main observations are worked out at the example of O(N) symmetric scalar field theories where the flows, universal critical expo...
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ژورنال
عنوان ژورنال: Journal of Physics G: Nuclear and Particle Physics
سال: 2017
ISSN: 0954-3899,1361-6471
DOI: 10.1088/1361-6471/aa6fda