"045007" . "Dynamical fermion mass generation by a strong Yukawa interaction" . "518939" . "We consider a model with global Abelian chiral symmetry of two massless fermion fields interacting with a complex massive scalar field. We argue that the Schwinger-Dyson equations for the fermion and boson propagators admit ultraviolet-finite chiral-symmetry-breaking solutions provided the Yukawa couplings are large enough. The fermions acquire masses and the elementary excitations of the complex scalar field are the two real spin-zero particles with different masses. As a necessary consequence of the dynamical chiral symmetry breakdown both in the fermion and scalar sectors, one massless pseudoscalar Nambu-Goldstone boson appears in the spectrum as a collective excitation of both the fermion and the boson fields. Its effective couplings to the fermion and boson fields are calculable." . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "Brauner, Tom\u00E1\u0161" . . "RIV/61389005:_____/05:00025831!RIV06-AV0-61389005" . "RIV/61389005:_____/05:00025831" . . . "Dynamick\u00E9 generov\u00E1n\u00ED fermionov\u00FDch hmot silnou Yukawovou interakc\u00ED"@cs . "Dynamical fermion mass generation by a strong Yukawa interaction"@en . "Uva\u017Eujeme model s glob\u00E1ln\u00ED abelovskou symetri\u00ED pro dva nehmotn\u00E9 fermiony interaguj\u00EDc\u00ED s komplexn\u00EDm skal\u00E1rn\u00EDm polem. Uk\u00E1\u017Eeme, \u017Ee Schwinger-Dysonovy rovnice pro fermionov\u00FD a bosonov\u00FD propag\u00E1tor p\u0159ipou\u0161t\u011Bj\u00ED ultrafialov\u011B kone\u010Dn\u00E9 \u0159e\u0161en\u00ED naru\u0161uj\u00EDc\u00ED chir\u00E1ln\u00ED symetrii, za p\u0159edpokladu, \u017Ee Yukawova interakce je dostate\u010Dn\u011B siln\u00E1. Fermiony z\u00EDskaj\u00ED hmotu a element\u00E1rn\u00EDmi excitacemi komplexn\u00EDho skal\u00E1rn\u00EDho pole jsou dv\u011B re\u00E1ln\u00E9 bezspinov\u00E9 \u010D\u00E1stice s r\u016Fzn\u00FDmi hmotami. Jako nutn\u00FD d\u016Fsledek dynamick\u00E9ho naru\u0161en\u00ED chir\u00E1ln\u00ED symetrie se ve spektru objev\u00ED Nambu-Goldstone\u016Fv boson jako kolektivn\u00ED excitace fermionov\u00FDch i bosonov\u00E9ho pole."@cs . . "Ho\u0161ek, Ji\u0159\u00ED" . . . . . "Physical Review D: Particles and Fields" . "4" . . "1"^^ . . . . "0556-2821" . . "dynamical mass generation; Yukawa interaction"@en . "Dynamical fermion mass generation by a strong Yukawa interaction"@en . . "Dynamical fermion mass generation by a strong Yukawa interaction" . "Dynamick\u00E9 generov\u00E1n\u00ED fermionov\u00FDch hmot silnou Yukawovou interakc\u00ED"@cs . "[F456C7096062]" . . . "We consider a model with global Abelian chiral symmetry of two massless fermion fields interacting with a complex massive scalar field. We argue that the Schwinger-Dyson equations for the fermion and boson propagators admit ultraviolet-finite chiral-symmetry-breaking solutions provided the Yukawa couplings are large enough. The fermions acquire masses and the elementary excitations of the complex scalar field are the two real spin-zero particles with different masses. As a necessary consequence of the dynamical chiral symmetry breakdown both in the fermion and scalar sectors, one massless pseudoscalar Nambu-Goldstone boson appears in the spectrum as a collective excitation of both the fermion and the boson fields. Its effective couplings to the fermion and boson fields are calculable."@en . "2"^^ . . . "72" . "P(GD202/05/H003), P(LA 080), Z(AV0Z10480505)" . "2"^^ .