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77 papers · 1 filter
Stability and Representation Dependence of the Quantum Skyrmion
A. Acus, E. Norvaisas, D. O. Riska
A constructive realization of Skyrme's conjecture that an effective pion mass ``may arise as a self consistent quantal effect'' based on an ab initio quantum treatment of the Skyrm…
UV Spectroscopy of AB Doradus with the Hubble Space Telescope. Impulsive flares and bimodal profiles of the CIV 1549 line in a young star
O. Vilhu, P. Muhli, J. Huovelin +3
We observed AB Doradus, a young and active late type star (K0 - K2 IV-V, P= 0.514 d) with the Goddard High Resolution Spectrograph of the post-COSTAR Hubble Space Telescope with th…
Bounds on sterile neutrino mixing for cosmologically interesting mass range
H. Nunokawa, J. T. Peltoniemi, A. Rossi +1
This talk summarizes our recent work which studied the impact of resonant and ( is a sterile neutrino) conversions on supernova physics, under…
Dynamics of a Pair of Interacting Spins Coupled to an Environmental Sea
M. Dube, P. C. E. Stamp
We solve for the dynamics of a pair of spins, coupled to each other and also to an environmental sea of oscillators. The environment mediates an indirect interaction between the sp…
New constraints on R-parity violation from μ-e conversion in nuclei
K. Huitu, J. Maalampi, M. Raidal +1
We derive new constraints on the products of explicitly R-parity violating couplings and in MSSM from searches for μ-e conversion in nuclei. We concentrate on the loop ind…
Spontaneous Generation of Pseudoscalar Mass in the U(3)xU(3) Linear Sigma Model
Nils A. Tornqvist
A novel, nonperturbative, way to generate chiral symmetry breaking within the linear sigma model for 3 flavours is discussed. After spontaneous chiral symmetry breaking in the vacu…