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Quantum
, 2008
"... field theory of a free massless (pseudo)scalar field in 1+1–dimensional space–time as a test for the massless Thirring model ..."
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field theory of a free massless (pseudo)scalar field in 1+1–dimensional space–time as a test for the massless Thirring model
Rotation of Linear Polarization Plane and Circular
, 802
"... Abstract. We show that a time evolving pseudoscalar field coupled to the electromagnetic tensor generates circular polarization and does not only rotate the plane of linear polarization. We compute analytically and numerically the propagation of the Stokes parameters from the last scattering surfac ..."
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Abstract. We show that a time evolving pseudoscalar field coupled to the electromagnetic tensor generates circular polarization and does not only rotate the plane of linear polarization. We compute analytically and numerically the propagation of the Stokes parameters from the last scattering
On spontaneous breaking of continuous symmetry in 1+1–dimensional space–time
, 2003
"... We analyse Coleman’s theorem asserting the absence of Goldstone bosons and spontaneously broken continuous symmetry in the quantum field theory of a free massless (pseudo)scalar field in 1+1–dimensional space–time (Comm. Math. Phys. 31, 259 (1973)). We confirm that Coleman’s theorem reproduces the w ..."
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Cited by 2 (2 self)
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We analyse Coleman’s theorem asserting the absence of Goldstone bosons and spontaneously broken continuous symmetry in the quantum field theory of a free massless (pseudo)scalar field in 1+1–dimensional space–time (Comm. Math. Phys. 31, 259 (1973)). We confirm that Coleman’s theorem reproduces
An Elementary (Pseudo)Scalar at all scales.
, 2002
"... We consider an extended linear σ model in which the fermions are quarks and are coupled to gluons. Equivalently, this is QCD extended by coupling the quarks to a colour singlet chiral multiplet of (σ,⃗π) fields. This theory has a phase governed by a UV fixed point where all couplings are AF (asympto ..."
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We consider an extended linear σ model in which the fermions are quarks and are coupled to gluons. Equivalently, this is QCD extended by coupling the quarks to a colour singlet chiral multiplet of (σ,⃗π) fields. This theory has a phase governed by a UV fixed point where all couplings are AF
Russian Federation
, 2002
"... We construct a consistent quantum field theory of a free massless (pseudo)scalar field in 1+1–dimensional space–times free of infrared divergences. We show that in such a quantum field theory (i) a continuous symmetry of (pseudo)scalar field translations is spontaneously broken, (ii) Goldstone boson ..."
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We construct a consistent quantum field theory of a free massless (pseudo)scalar field in 1+1–dimensional space–times free of infrared divergences. We show that in such a quantum field theory (i) a continuous symmetry of (pseudo)scalar field translations is spontaneously broken, (ii) Goldstone
Comments to Coleman’s article “There are no Goldstone Bosons in Two Dimensions”
, 2002
"... We discuss Coleman’s theorem asserting the absence of a spontaneously broken continuous symmetry and Goldstone bosons in the quantum field theory of a free massless (pseudo)scalar field in 1+1–dimensional space–time (Comm. Math. Phys. 31, 259 (1973)). We argue that Coleman’s theorem is very question ..."
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Cited by 2 (2 self)
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We discuss Coleman’s theorem asserting the absence of a spontaneously broken continuous symmetry and Goldstone bosons in the quantum field theory of a free massless (pseudo)scalar field in 1+1–dimensional space–time (Comm. Math. Phys. 31, 259 (1973)). We argue that Coleman’s theorem is very
Comments on Coleman’s paper “There are no Goldstone Bosons in Two Dimensions
"... We analyse Coleman’s theorem asserting the absence Goldstone bosons and spontaneously broken continuous symmetry in the quantum field theory of a free massless (pseudo)scalar field in 1+1–dimensional space–time (Comm. Math. Phys. 31, 259 (1973)). We confirm that Coleman’s theorem reproduces well–kno ..."
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Cited by 4 (3 self)
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We analyse Coleman’s theorem asserting the absence Goldstone bosons and spontaneously broken continuous symmetry in the quantum field theory of a free massless (pseudo)scalar field in 1+1–dimensional space–time (Comm. Math. Phys. 31, 259 (1973)). We confirm that Coleman’s theorem reproduces well
Massless (pseudo)scalar seeds of CMB anisotropy
, 1998
"... A primordial stochastic background of very weakly coupled massless (pseudo)scalars can seed CMB anisotropy, when largescale fluctuations of their stresstensor reenter the horizon during the matterdominated era. A general relation between multipole coefficients of the CMB anisotropy and the seed ..."
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Cited by 1 (1 self)
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with observations [1]. Axionic perturbations with the needed characteristics can be produced [2], [3], [4], for instance, in the socalled prebig bang scenario [5] of string cosmology. For the sake of generality we define a massless (pseudo)scalar “seed ” field σ through the way it enters the lowenergy effective
Virtual Loops Scalar/Pseudoscalar Exchange ElectronPositron Loops (eē) Neutral Pion (pseudoscalar: φπ)
, 804
"... Abstract. The effects of pions for vacuum polarization in background magnetic fields are considered. The effects of quark condensates is also briefly addresses. Although these effects are out of the measurement accuracy of laboratory experiments they may be relevant for gammaray burst propagation. ..."
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Abstract. The effects of pions for vacuum polarization in background magnetic fields are considered. The effects of quark condensates is also briefly addresses. Although these effects are out of the measurement accuracy of laboratory experiments they may be relevant for gammaray burst propagation
Scalartensor theories with pseudoscalar couplings
, 902
"... We consider the scalartensor theories of gravity extended by the pseudoscalar couplings to matter and gauge fields and derive constraints on the CPodd combinations of scalar and pseudoscalar couplings from laboratory spin precession experiments and from the evolution of photon polarization over co ..."
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We consider the scalartensor theories of gravity extended by the pseudoscalar couplings to matter and gauge fields and derive constraints on the CPodd combinations of scalar and pseudoscalar couplings from laboratory spin precession experiments and from the evolution of photon polarization over
Results 1  10
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