We present a general method for dynamically posting symmetry breaking constraints during search. The basic idea is very simple. Given any set of symmetry breaking constraints, if during search a symmetry of one of these constraints is entailed and this is consistent with previously posted symmetry breaking constraints, then we post this constraint. We illustrate the method with two examples whe...

Article history: Received 1 March 2010 Received in revised form 20 July 2010 Accepted 28 July 2010 Available online 10 August 2010

We show that an intermediate gauge symmetry breaking scale can be a significant source of electric dipole moments for the electron and neutron in supersymmetric grand unified theories. New phases, similar to that of the CKM matrix, appear which do not arise from the supersymmetry (SUSY) breaking operators. To illustrate, we choose some grand unified SUSY models having an intermediate gauge symm...

We study a two-country version of Matsuyama’s (Econometrica, 72, p. 853–84, 2004) world economy model. As in Matsuyama’s model, symmetry-breaking can be observed, and symmetry-breaking generates endogenously determined levels of inequality. In addition, we show that when the countries differ in population size, their interaction through credit markets may lead to persistent endogenous fluctuati...

We introduce extended chiral transformation, which depends both on pseudoscalar and diquark fields as parameters and determine its group structure. Assuming soft symmetry breaking in diquark sector, bosonisation of a quasiGoldstone ud-diquark is performed. In the chiral limit the ud-diquark mass is defined by the gluon condensate, mud ≈ 300MeV . The diquark charge radius is 〈r ud〉 1/2 ≈ 0.5fm. ...

We review the possibilities that the Kaluza-Klein excitations of graviton states induce electroweak symmetry breaking and that electroweak symmetry breaking could have a large impact on KK phenomenology. In one popular approach [1] to extra dimensions with length scales far larger than the inverse Planck mass [2], ordinary particles are confined on a brane (having three spatial dimensions) with...

We discuss a nlodel for phyllotaxis which is suliiciently simple to allow analytical insight in the system. We describe generic properties of the solutions. Among other things we show that the symmetry breaking which characterizes phyllotaxis has the features of a second order phase transition.