dorsal/arxiv
View SchemaFew-body physics in effective field theory
| Authors | H. -W. Hammer |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0507060 |
| URL | https://arxiv.org/abs/nucl-th/0507060 |
| DOI | 10.1088/0954-3899/31/8/003 |
| Journal | J.Phys. G31 (2005) S1253-S1261 |
Abstract
Effective Field Theory (EFT) provides a powerful framework that exploits a separation of scales in physical systems to perform systematically improvable, model-independent calculations. Particularly interesting are few-body systems with short-range interactions and large two-body scattering length. Such systems display remarkable universal features. In systems with more than two particles, a three-body force with limit cycle behavior is required for consistent renormalization already at leading order. We will review this EFT and some of its applications in the physics of cold atoms and nuclear physics. In particular, we will discuss the possibility of an infrared limit cycle in QCD. Recent extensions of the EFT approach to the four-body system and N-boson droplets in two spatial dimensions will also be addressed.
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"abstract": "Effective Field Theory (EFT) provides a powerful framework that exploits a\nseparation of scales in physical systems to perform systematically improvable,\nmodel-independent calculations. Particularly interesting are few-body systems\nwith short-range interactions and large two-body scattering length. Such\nsystems display remarkable universal features. In systems with more than two\nparticles, a three-body force with limit cycle behavior is required for\nconsistent renormalization already at leading order. We will review this EFT\nand some of its applications in the physics of cold atoms and nuclear physics.\nIn particular, we will discuss the possibility of an infrared limit cycle in\nQCD. Recent extensions of the EFT approach to the four-body system and N-boson\ndroplets in two spatial dimensions will also be addressed.",
"arxiv_id": "nucl-th/0507060",
"authors": [
"H. -W. Hammer"
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"nucl-th"
],
"doi": "10.1088/0954-3899/31/8/003",
"journal_ref": "J.Phys. G31 (2005) S1253-S1261",
"title": "Few-body physics in effective field theory",
"url": "https://arxiv.org/abs/nucl-th/0507060"
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