Fate of the neutron–deuteron virtual state as an Efimov level

Fate of the neutron–deuteron virtual state as an Efimov level

The emergence of Efimov levels in a three-body system is investigated near the unitarity limit characterized by a resonant two-body interaction. No direct evidence of Efimov levels is seen in the three-nucleon system since the triton is the only physical bound state. We provide a model-independent a...

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Main Authors: Gautam Rupak, Akshay Vaghani, Renato Higa, Ubirajara van Kolck
Format: Article
Language:English
Published: Elsevier 2019-04-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S037026931830666X
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spelling doaj-28c29d8ca94e4fc7a5a2cec4242756b12020-11-24T21:37:53ZengElsevierPhysics Letters B0370-26932019-04-01791414419Fate of the neutron–deuteron virtual state as an Efimov levelGautam Rupak0Akshay Vaghani1Renato Higa2Ubirajara van Kolck3Department of Physics & Astronomy and HPC2 Center for Computational Sciences, Mississippi State University, Mississippi State, MS 39762, USA; Corresponding author.Department of Physics & Astronomy and HPC2 Center for Computational Sciences, Mississippi State University, Mississippi State, MS 39762, USAInstituto de Física, Universidade de São Paulo, R. do Matão 1371, 05508-090, São Paulo, SP, BrazilInstitute de Physique Nucléaire, CNRS/IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay, France; Department of Physics, University of Arizona, Tucson, AZ 85721, USAThe emergence of Efimov levels in a three-body system is investigated near the unitarity limit characterized by a resonant two-body interaction. No direct evidence of Efimov levels is seen in the three-nucleon system since the triton is the only physical bound state. We provide a model-independent analysis of nucleon–deuteron scattering at low energy by formulating a consistent effective field theory. We show that virtual states evolve into shallow bound states, which emerge as excited triton levels as we drive the system towards unitarity. Even though we consider this specific system, our results for the emergence of the Efimov levels are universal. Keywords: Efimov levels, Neutron–deuteron scattering, Nuclear effective field theoryhttp://www.sciencedirect.com/science/article/pii/S037026931830666X
collection DOAJ
language English
format Article
sources DOAJ
author Gautam Rupak
Akshay Vaghani
Renato Higa
Ubirajara van Kolck
spellingShingle Gautam Rupak
Akshay Vaghani
Renato Higa
Ubirajara van Kolck
Fate of the neutron–deuteron virtual state as an Efimov level
Physics Letters B
author_facet Gautam Rupak
Akshay Vaghani
Renato Higa
Ubirajara van Kolck
author_sort Gautam Rupak
title Fate of the neutron–deuteron virtual state as an Efimov level
title_short Fate of the neutron–deuteron virtual state as an Efimov level
title_full Fate of the neutron–deuteron virtual state as an Efimov level
title_fullStr Fate of the neutron–deuteron virtual state as an Efimov level
title_full_unstemmed Fate of the neutron–deuteron virtual state as an Efimov level
title_sort fate of the neutron–deuteron virtual state as an efimov level
publisher Elsevier
series Physics Letters B
issn 0370-2693
publishDate 2019-04-01
description The emergence of Efimov levels in a three-body system is investigated near the unitarity limit characterized by a resonant two-body interaction. No direct evidence of Efimov levels is seen in the three-nucleon system since the triton is the only physical bound state. We provide a model-independent analysis of nucleon–deuteron scattering at low energy by formulating a consistent effective field theory. We show that virtual states evolve into shallow bound states, which emerge as excited triton levels as we drive the system towards unitarity. Even though we consider this specific system, our results for the emergence of the Efimov levels are universal. Keywords: Efimov levels, Neutron–deuteron scattering, Nuclear effective field theory
url http://www.sciencedirect.com/science/article/pii/S037026931830666X
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AT akshayvaghani fateoftheneutrondeuteronvirtualstateasanefimovlevel
AT renatohiga fateoftheneutrondeuteronvirtualstateasanefimovlevel
AT ubirajaravankolck fateoftheneutrondeuteronvirtualstateasanefimovlevel
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