Hadronic parity-violation in pionless effective field theory

At low energies, the weak interactions between quarks manifest themselves in a parity-violating component of the interactions between nucleons. Experiments are being performed at the SNS, NIST and other neutron facilities to map out this weak component of the nuclear force. I will describe how effective field theory is used to describe hadronic parity violation in a systematic and model-independent way. After discussing two-nucleon observables, such as the photon asymmetry $A_\gamma$ in polarized neutron capture $\vec n p \to d\gamma$, I will focus on the three-nucleon system. It is shown that parity-violating three-nucleon interactions do not contribute at the accuracy of current and prospective experiments. Therefore, few-nucleon experiments can be used to gain information on parity-violating two-nucleon interactions. I will also present the results of an effective field theory calculation of neutron spin rotation in deuterium.