Structure Factors of Neutron Matter at Finite Temperature
Andrei Alexandru, Paulo F. Bedaque, Evan Berkowitz, Neill C. Warrington
Abstract
We compute continuum and infinite volume limit extrapolations of the structure factors of neutron matter at finite temperature and density. Using a lattice formulation of leading-order pionless effective field theory, we compute the momentum dependence of the structure factors at finite temperature and at densities beyond the reach of the virial expansion. The Tan contact parameter is computed and the result agrees with the high momentum tail of the vector structure factor. All errors, statistical and systematic, are controlled for. This calculation is a first step towards a model-independent understanding of the linear response of neutron matter at finite temperature.
Topics & Concepts
PhysicsNuclear matterFinite volume methodStatistical physicsNeutronVirial coefficientStructure factorMomentum (technical analysis)Effective field theoryQuantum electrodynamicsNuclear physicsCondensed matter physicsThermodynamicsQuantum mechanicsFinanceEconomicsNucleonQuantum, superfluid, helium dynamicsAtomic and Subatomic Physics ResearchHigh-pressure geophysics and materials