Description: Ground state energy of dilute neutron matter at next-to-leading order in lattice chiral effective field theory.

This title appears in the Scientific Report : 2010

Ground state energy of dilute neutron matter at next-to-leading order in lattice chiral effective field theory.

We present lattice calculations for the ground-state energy of dilute neutron matter at next-to-leading order in chiral effective field theory. This study follows a series of recent papers on low-energy nuclear physics using chiral effective field theory on the lattice. In this work we introduce an...

Personal Name(s):	Epelbaum, E.
	Krebs, H. / Lee, D. / Meissner, U.G.
Contributing Institute:	Theorie der starken Wechselwirkung; IKP-3
Published in:	The @European physical journal / A, 40 (2009) S. 199 - 213
Imprint:	Berlin Springer 2009
Physical Description:	199 - 213
DOI:	10.1140/epja/i2009-10755-0
Document Type:	Journal Article
Research Program:	Physik der Hadronen und Kerne
Series Title:	European Physical Journal A 40
Subject (ZB):	effective field theory: chiral energy: ground state n: matter matter: density effective potential lattice field theory: action perturbation theory: higher-order numerical calculations: Monte Carlo
Link:	Get full text OpenAccess
	Publikationsportal JuSER

Please use the identifier: http://hdl.handle.net/2128/10435 in citations.
Please use the identifier: http://dx.doi.org/10.1140/epja/i2009-10755-0 in citations.

We present lattice calculations for the ground-state energy of dilute neutron matter at next-to-leading order in chiral effective field theory. This study follows a series of recent papers on low-energy nuclear physics using chiral effective field theory on the lattice. In this work we introduce an improved spin- and isospin-projected leading-order action which allows for a perturbative treatment of corrections at next-to-leading order and smaller estimated errors. Using auxiliary fields and Euclidean-time projection Monte Carlo, we compute the ground state of 8, 12, and 16 neutrons in a periodic cube, covering a density range from 2% to 10% of normal nuclear density.