Showing papers in "Nuclear Physics in 1981"

TL;DR: In this article, general conditions for dynamical supersymmetry breaking are discussed and examples are given (in 0 + 1 and 2 + 1 dimensions) in which such a program in four dimensions is possible.

TL;DR: In this paper, it was proved that the counterterm for an arbitrary 4-loop Feynman diagram in an arbitrary model is calculable within the minimal subtraction scheme in terms of rational numbers and the Riemann ζ-function in a finite number of steps via a systematic "algebraic" procedure involving neither integration of elementary, special, or any other functions, nor expansions in and summation of infinite series of any kind.

TL;DR: In this article, the authors construct an explicit realistic SU(5) model in which softly broken supersymmetry is used to protect the Higgs doublets from quadratic mass renormalization.

TL;DR: In this paper, an SO(10) gauge theory with SU(3)c × U(1)e.m. via SU(4c × SU(2)L × SU (2)R are presented.

TL;DR: In this paper, it was shown that for a general class of fermion theories on a Kogut-Susskind lattice an equal number of species (types) of left and right-handed Weyl particles (neutrinos) necessarily appears in the continuum limit.

TL;DR: In this article, it was shown that SU(n) gauge theories can be written in the form of abelian gauge theories with N − 1 fold multiplicity enriched with magnetic monopoles with certain magnetic charge combinations.

TL;DR: In this paper, the background field approach to multi-loop calculations in gauge field theories is presented and a relation between the gauge-invariant effective action computed using this method and the effective action of the conventional functional approach is derived.

TL;DR: In this paper, the cross section for the semi-inclusive process e+ + e− → A + B + X is calculated in terms of quark decay functions d A a (z).

TL;DR: In this article, an intuitive topological proof is given for putting Weyl fermions in weak interaction on a lattice, or for constructing chiral invariant lattice QCD, which was proved by a homotopy theory argument in their preceding paper.

TL;DR: In this article, the authors report variational calculations of the equation of state of hot and cold, nuclear and neutron matter, covering a wide density range of interest in heavy-ion collisions and astrophysics.

TL;DR: In this paper, an attempt was made to construct a realistic model of particle physics based on eleven-dimensional supergravity with seven dimensions compactified, and the model was used to obtain an SU(3) × SU(2) × U(1) gauge group, but the proper fermion quantum numbers are difficult to achieve.

TL;DR: In this paper, the polarization operator of quark currents with baryon quantum numbers is considered in quantum chromodynamics and the non-zero mean vacuum values of the field operator products are taken into account.

TL;DR: In this paper, the authors study the properties of interacting field theories which are invariant under duality rotations which transform a vector field strength into its dual, and show that the largest group for n interacting field strengths is the non-compact Sp(2 n,R), which has U( n ) as its maximal compact subgroup.

TL;DR: In this paper, the authors calculate the O(αs2) corrections to the event shape in e+e− annihilation due to the parton processes e + e − → q q G, e+ e− → q Q q q qq and e + ǫ − q q GG.

TL;DR: In this article, a mass term for gauge fields in three-dimensional spacetime was proposed, where the Aμ is a Lie algebra representation of the Poincare algebra with only one polarization for spin equal to any real number, integral multiple of one-half or otherwise.

TL;DR: The relativistic Hartree equations for spherical nuclei were derived from a relativistically nuclear quantum field theory using a coordinate-space Green function approach in this paper, which represented the mean-field approximation for a finite nuclear system.

TL;DR: In this paper, it was shown that a lattice fermion formulation without species doubling and with explicit continuous chiral symmetry is impossible and interpreted as a manifestation of the triangle anomaly.

TL;DR: In this paper, the mass scale intrinsic to the resonance structures in different channels is not universal; a large mass scale is discovered, for instance, in the 0 −, 0 + gluonic channels.

TL;DR: In this article, it was shown that the associated Goldstone bosons live effectively in 1 + 1 dimensions and therefore, by the Mermin-Wagner-Coleman theorem, destabilize the flux tube.

TL;DR: In this paper, a systematic study of neutrino masses in models with local B -L symmetry is presented, which is necessary to explain why m e is not equal m d, is related to the scale of B-L violation.

TL;DR: In this paper, the authors suggest that a complete description of the fermion-vortex system should include a fermanion-scalar field interaction. And they show that an index theorem exists for this Dirac equation on the non-compact space R 2.

TL;DR: In this paper, the Schrodinger functional differential operator is shown to exist in renormalizable quantum field theory to all orders in the perturbation expansion, including spin-1 2 fermions, and the Casimir potential for disjoint surfaces is computed for a pair of parallel plates to first order in massless φν4.

TL;DR: In this article, the authors defend the identification of pole with constituent masses on the one hand and of invariant mass flavour ratio with current mass flavour ratios on the other hand, and prove that the pole mass is gauge-parameter independent and infrared finite at the two-loop level.

TL;DR: In this paper, it was proved that the physical states of the open-string sector of the ten-dimensional string theory form supersymmetry multiplets, and the proof was achieved by first constructing a new formulation of the spectrum generating algebra, and then forming the supersymmetric operator (as well as associated operators) and demonstrating that it transforms as a spinor under Lorentz transformations and has the correct anticommutation relations.

TL;DR: In this article, the complete structure of extended conformal supergravity for N ⩽4 is presented, and the relation with the graded algebra SU(2, 2| N ) and with the multiplet of currents is discussed.

TL;DR: In this paper, a supersymmetric analogue in 2 + 2 superspace is constructed and leads to the supersymmymmetric σ-model defined on a general riemannian manifold.

TL;DR: In this article, the authors define a topological number Q for spin fields on a two-dimensional lattice, which reduces to the well-known winding number in the classical continuum limit.

TL;DR: In this paper, the meson field lagrangian is worked out in detail in the strong coupling limit with various lattice fermion formulations for generalized Susskind fermions, and a generalized version of the non-linear σ model emerges in a natural way.

TL;DR: In this article, a folded-Yukawa single-particle potential was used to calculate the ground-state masses of 28 nuclei ranging from 109 Cd to 252 Cf.