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arXiv · 1501.03004

Hadron Wavefunctions as a Probe of a Two Color Baryonic Medium

Alessandro Amato·Pietro Giudice·Simon Hands
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Abstract

The properties of the ground state of two-color QCD at non-zero baryon chemical potential $\mu$ present an interesting problem in strongly-interacting gauge theory; in particular the nature of the physically-relevant degrees of freedom in the superfluid phase in the post-onset regime $\mu>m_\pi/2$ still needs clarification. In this study we present evidence for in-medium effects at high $\mu$ by studying the wavefunctions of mesonic and diquark states using orthodox lattice simulation techniques, made possible by the absence of a Sign Problem for the model with $N_f=2$. Our results show that beyond onset the spatial extent of hadrons decreases as $\mu$ grows, and that the wavefunction profiles are consistent with the existence of a dynamically-gapped Fermi surface in this regime.

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Alessandro Amato, Pietro Giudice, Simon Hands. 2015-01-13. Hadron Wavefunctions as a Probe of a Two Color Baryonic Medium. https://doi.org/10.1140/epja%2Fi2015-15039-6

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