INSTITUTE FOR NUCLEAR THEORY

News Archive

Home | Contact | Search | Site Map
line decor
line decor


2013 News Items

Nuclear Reactions from Lattice QCD
(INT Workshop March 11-12, 2013)

Reported by R. Briceno, Z. Davoudi, T. Luu
Date posted April 9, 2013

Lattice quantum chromodynamics (LQCD), as the only truly ab inito approach for studying hadronic systems, has recently started to address long-standing problems in nuclear physics. Studying nuclear reactions directly from LQCD is the most recent quest in this direction, and amongst the most challenging ones as well. Read more...










Computational and Theoretical Advances for Exotic Isotopes in the Medium Mass Region
(INT Program March 25 - April 19, 2013)

Reported by C. Barbieri, T. Duguet, G. Hagen, and S. Bogner
Reported on July 9, 2013

Low energy nuclear physics is currently going through an unprecedented revival due to several combining factors. Explicit links with the underlying Quantum Chromo Dynamics have allowed to developed models of the nuclear interaction soft enough to converge in quantum many-body calculations, say up to A=100 nucleons. Read more...








Quantum Noise in Nuclear and Condensed Matter Physics
(INT Program May 6 - 31, 2013)

Reported by A. Andreev, L. Glazman, and D.B. Kaplan
Reported on July 30, 2013

Quantum fluctuations or "noise" are ubiquitous. Though treated as random in statistical approaches, fluctuations often arise from dynamical correlations between the underlying degrees of freedom of the physical system. In some situations noise complicates obtaining the information of interest from an experiment or a numerical simulation. Read more...












Advances in Quantum Monte Carlo Techniques for Non-Relativistic Many-Body Systems
(INT Program June 24th - August 2nd, 2013)

Reported by F. Arias de Saavedra, J. E. Drut, J. L. DuBois, S. Gandolfi, F. Pederiva
Reported on August 28, 2013

Whenever a reliable, first-principles understanding of a many-body quantum mechanical problem is required, Monte Carlo methods are needed. Read more...









2012 News Items

Gauge Field Dynamics In and Out of Equilibrium
(INT Program July 30 - August 31, 2012)

Reported by G. Aarts, G.D. Moore, M. Laine
Reported on April 20, 2012

The many-body physics of relativistic non-Abelian gauge theories plays an important role in current heavy ion collision experiments, in the astrophysics
of compact stars, as well as in cosmology. Read more...









Orbital Angular Momentum in QCD
(INT Workshop February 6 - 17, 2012)

Reported by L. Bland, Z.E. Meziani, G.A. Miller, M. Vanderhaeghen, C. Weiss, F. Yuan
Reported on July 31, 2012

Angular momentum has emerged as a key issue in the quest to understand the internal structure of hadrons on the basis of the fundamental theory of strong interactions, Quantum Chromodynamics (QCD). How does the nucleon's spin arise from the interacting quark and gluon fields or their particle-like quanta? Read more...





Core-Collapse Supernovae: Models and Obserable Signals
(INT Program June 25 - July 27, 2012)

Reported by C. Cardall, H-T. Janka, J. Lattimer, J. Murphy
Reported on August 9, 2012

Core-collapse supernovae are among the most energetic explosions in the Universe. As such they
play a major role in many astrophysical phenomena, including galactic dynamics, nucleosynthesis,
and neutron star and black hole formation. Read more...








Lattice QCD Studies of Excited Resonances and Multi-Hadron Systems
(INT Program July 30 - August 31, 2012)
Reported by Silas Beane and Colin Morningstar
Reported on November 26, 2012

The calculation of properties of excited baryon and meson resonances, exotic states, and multi-hadron systems using lattice QCD has only recently become possible due to advances in high-performance computing supplemented by novel methodologies and algorithmic developments. Read more...






2011 News Items


Gluons and the Quark Sea: Distributions, polarization, tomography
(INT Program September 13 to November 19, 2010)

Reported by Daniel Boer, Markus Diehl, Richard Milner, Raju Venugopalan, Werner Vogelsang
Reported on May 18, 2011

The INT program on Gluons and the Quark Sea addressed outstanding open questions in our understanding of the partonic sub-structure of hadrons and nuclei at high energies. Despite much progress, basic questions of fundamental interest are either unresolved or have a significant degree of ambiguity in their interpretation. Read more...






Fermions from Cold Atoms to Neutron Stars: Benchmarking the Many-Body Problem
(INT Program March 14 - May 20, 2011)

Reported by Michael McNeil Forbes, Aurel Bulgac, Alexandros Gezerlis, Gorva V. Shlyapnikov, Tin-Lun (Jason) Hu, Martin W. Zwierlein
Reported on September 20, 2011

Fermionic many-body theory lies at the heart of many physical systems, from cold atoms through superconductors and superfluids to nuclear matter and dense QCD, yet concrete and reliable results are difficult to obtain, even for the simplest systems. Read more...








Multi-Messenger Probes of Nuclear Physics
(INT Program July 11 - August 5, 2011)

Reported by B. Link, E. F. Brown, C. L. Fryer, S. Reddy
Reported on September 21, 2011

In the coming decade, science for the first time may witness transient astrophysical events,
such as the explosion of a massive star, not only across a wide swath of the electromagnetic
spectrum, but also in neutrinos and gravitational waves. Read more...








Interfaces between Structure and Reactions for Rare Isotopes and Nuclear Astrophysics
(INT Workshop August 8 - September 2, 2011)

Reported by B. A. Brown (chair), H. Esbensen, P. Danielewicz, J.A. Tostevin
Reported on November 18, 2011

The goal of this INT Program was to identify those problems in the area of theory for reactions with rare isotopes that need to be solved in order to plan experiments for FRIB (the Facility for Rare Isotopes) and in order to understand the experimental results in terms of nuclear structure and applications to nuclear astrophysics.. Read more...








Extreme Computing and its Implications for the Nuclear Physics/Applied
Mathematics/Computer Science Interface
(INT Program June 6 - July 8, 2011)

Reported by W. C. Haxton; Organizing Committee: Joe Carlson, George Fuller, Tom Luu, Juan Meza, Tony Mezzacappa, John Negele, Esmond Ng, Steve Pieper, Martin Savage, James Vary, Pavlos Vranas
Reported on December 8, 2011

The program was organized with the goal of keeping the nuclear physics community an active participant in planning for exascale computing. The field has several important applications that are computationally limited, including lattice QCD; various ab initio
nuclear structure methods (diagonalization of large sparse
shell-model matrices, ... Read more...





2010 News Items


The Jefferson Laboratory Upgrade to 12 GeV
(INT program September 14 - October 16 &
October 26 - November 20, 2009)

Reported by Carlos Munoz Camacho,Rolf Ent,Jerry Miller, and Tony Thomas
Reported on February 12, 2010

The immediate goal was to bring experimentalists and theorists together to explore and develop important aspects of the exciting physics possibilities. This goal was well achieved, as the program brought together a wide variety of about 100 experimentalists and theorists (almost 50% experimentalists) to work together during the nine-weeks of the program. Read more...



From Femtoscience to Nanoscience: Nuclei, Quantum Dots and Nanostructuress
(INT program July 20 - August 28, 2009)

Reported by Y. Alhassid, B.L. Altshuler, and V.I. Fal'ko
Reported on March 15, 2010

The program was interdisciplinary in nature and brought together the nuclear and condensed matter communities. Its main focus was on correlation effects in finite-size quantum systems such as nuclei, quantum dots and nanostructures. Read more...












New applications of the renormalization group method in nuclear, particle and condensed matter physics
(INT workshop February 22-26, 2010)

Reported by Mike Birse, Yannick Meurice, and Shan-Wen Tsai
Reported on April 12, 2010

The ideas of the renormalization group (RG) and scale invariance have played central roles in physics and are associated with the emergence of key concepts such as universality, self-similarity, scaling and asymptotic freedom. Read more...







Simulations and Symmetries: Cold Atoms, QCD, and Few-hadron Systems
(INT program March 15 - May 21, 2010)

Reported by Daniel Phillips, Hans-Werner Hammer, Martin Savage
Reported on August 9, 2010

Rapid advances in the experimental study of systems of cold atoms have provided controlled environments in which to explore quantum many-body dynamics. In particular, the ability to trap atoms, and dictate the strength of their interaction through Feshbach resonances, has provided a laboratory with which to investigate the consequences of varying scattering lengths all the way from the range of the atom-atom interaction to infinity. Read more...


Quantifying the Properties of Hot QCD Matter
(INT Program May 24 - July 16, 2010)

Reported by Brian Cole, Ulrich Heinz, Peter Jacobs, Yuri Kovchegov, Berndt Mueller, Jamie Nagle
Reported on September 16, 2010

The program on Quantifying the Properties of Hot QCD Matter was held at the INT from May 24 to July 16, 2010. The goal of the program was to bring theorists and experimentalists together to assess the results of the experimental heavy ion physics program at RHIC in the light of state-of-the-art models of relativistic heavy ion collisions, the dynamics of hot QCD matter, and of the interactions of hard probes with the hot medium. Read more...


Long-Baseline Neutrino Physics and Astrophysics
(INT Program July 26 - August 27, 2010)

Reported by Wick Haxton, Boris Kayser, Bill Marciano, Aldo Serenelli
Reported on November 1, 2010

The program on Long-Baseline Neutrino Physics and Astrophysics focused on the unresolved questions in neutrino physics and their implications for astrophysics. While we now know that neutrinos are massive and that the mass eigenstates are distinct from the flavor eigenstates, many associated properties are not yet determined. Read more...







2009 News Items


Low Energy Precision Electroweak Physics in the LHC Era
(INT Program September 22 - December 5, 2008)

Reported by V. Cirigliano, J. Erler, K. S. Kumar , M. J. Ramsey-Musolf
Reported on March 19, 2009

Our current understanding of the fundamental constituents of matter and their interactions (except for gravity) is encoded in the so-called Standard Model (SM) of strong and electroweak interactions. The SM describes the interactions among matter constituents (quark and leptons) mostly in terms of the exchange of spin-1 force carriers (gauge bosons). Read more...








Solar Fusion Cross Sections for the pp Chain and CNO Cycle
(INT Workshop January 21 - 23, 2009)

Reported by W. Haxton
Reported on April 7, 2009

The 21-23 January 2009 workshop brought together 42 participants - experimentalists and theorists - to consider the nuclear microphysics important to the standard solar model and to red giants. Read more...







New frontiers in large N gauge theories
(INT Workshop February 3 - 6, 2009)

Reported by Barak Bringoltz
Reported on June 5, 2009

The workshop succeeded in bringing together physicists from different communities: large N phenomenology, lattice gauge theory, formal QFT, and AdS/CFT, to explore topics of joint interest. Read more...







Effective Field Theories and the Many-Body Problem
(INT program March 23 - June 5, 2009)

Reported by Calvin Johnson, Dick Furnstahl, Erich Ormand, and Bira van Kolck
Reported on July 28, 2009

The program on Effective Field Theories and the Many-body problem was held at the INT from
March 23 through June 5, 2009. We had close to
90 participants and 54 talks. Read more...









Joint CATHIE-INT mini-program: Quarkonium in Hot Media - from QCD to Experiment
(INT program June 16 - 26, 2009)

Reported by Nora Brambilla, Dmitri Kharzeev, Peter Petreczky, Helmut Satz, Antonio Vairo, and Ramona Vogt
Reported on August 3, 2009

The mini program "Quarkonium in Hot Media: from QCD to Experiment" was held at the INT in Seattle on June 16-26, 2009 with 32 participating researchers. Read more...










INT workshop on Physics at a High Energy Electron Ion Collider
(INT workshop October 19 - 23, 2009)

Reported by Daniel Boer, Markus Diehl, Raju Venugopalan, and Werner Vogelsang
Reported on December 21, 2009

The goal of the INT workshop on Physics at a High Energy Electron Ion Collider was to explore the physics case for an Electron Ion Collider (EIC), A "medium energy" proposal for the collider would provide high luminosity collisions (1033/cm2/sec or greater) of 4 to 5 GeV electron beams on polarized proton beams with energies ranging from 60 to 250 GeV and light and heavy nuclei with energies up to 100 GeV/nucleon. Read more...







2008 News Items


The Flip Side of Femtoscopy
(A personal perspective)

Reported by Rick Casten
Reported on February 29, 2008

By far, the most common approaches today to understanding the structure of atomic nuclei are femtoscopic, by which is meant approaches focused at the nucleonic level, whether these be ab initio calculations, no-core shell model methods, large-basis shell model calculations, perhaps using Monte Carlo techniques, density functional theory (DFT) methods, or similar approaches. Read more...










Nuclear Interactions at Ultra-high Energy in Light of Recent Results from Auger
(INT workshop Feb. 20 - 22, 2008)

Reported by Larry McLerran
Reported on May 12, 2008

The Auger cosmic ray experiment is designed to measure the properties of the highest energy cosmic rays, up to 1021 eV, corresponding to a center of mass energy of 103 TeV. This is two orders of magnitude higher than the energy of pp collisions which will soon be measured in the CERN LHC experiments. Read more...

Soft photons and light nuclei
(INT workshop June 16 - 20, 2008)

Reported by Daniel Phillips, Walter Gloeckle, Haiyan Gao, and Al Nathan
Reported on July 9, 2008

About 40 theoreticians and experimentalists attended the INT workshop (co-sponsored by the Triangle Universities Nuclear Laboratory (TUNL) and the University of Illinois at Urbana-Champaign) on "Soft photons and light nuclei" at the INT from June 16-20, 2008. This meeting focused on theoretical and experimental work pertaining to photo-induced reactions on protons, neutrons, and few-body nuclei at energies below the pion threshold. Read more...

From Strings to Things
(INT program March 24 - June 6, 2008)

Reported by Dam T. Son, Misha Stephanov, Matthew Strassler, and Derek Teaney
Reported on July 28, 2008

The quest for understanding strong interactions has a long history. The challenge to construct a fundamental theory of the interactions which bind together protons and neutrons in atomic nuclei, and which are responsible for hundreds of hadronic resonances, led to the advent and development of theoretical methods which later found applications in many fields of physics.. Read more...

The QCD critical point
(INT program July 28 - August 22, 2008)

Reported by Reported by Volker Koch, Gunther Roland, and Misha Stephanov
Reported on November 12, 2008

The QCD phase diagram is a map showing what equilibrium state strongly interacting matter would assume at given temperature and baryon density. The nature of the different phases and the location of the phase boundaries have been intriguing questions for many years. Read more...






Atomic, Chemical, and Nuclear Developments in Coupled Cluster Methods
(INT program June 23 - July 25, 2008)

Reported by Rod Bartlett, David Dean, Walter Johnson, and Achim Schwenk
Reported on December 2, 2008

Today, Coupled Cluster (CC) theory is widely recognized as often offering the most accurate description available for a wealth of important problems in physics and chemistry, ranging from the structure of nuclei, to relativistic CC theory of atoms, to spectra and properties of molecules. Read more...




2007 News Items


Two-photon exchange and the proton form factor puzzle
Reported by Wally Melnitchouk
Reported on March 16, 2007

The proton's electromagnetic form factors are one of the most basic observables which characterize the proton's finite spatial extent. One may have thought that with over half a century of measurements we would know pretty much all that there is to know about the proton's charge and magnetic form factors, at least in the kinematics accessible to experiment. Read more...




Quarks, gluons and nuclear forces
Reported by Paulo Bedaque
Reported on August 31, 2007

When students are first told about the fundamental forces of the Universe, the strong nuclear force is described as the force binding protons and neutrons together inside nuclei. Read more...