The RIKEN BNL Research Center offers a Fellow system at Brookhaven's Relativistic Heavy Ion Collider (RHIC) allowing joint appointments with universities and research laboratories throughout the world, enabling talented researchers to hold tenure track positions at their home institution as well as a Fellow position with the Center.
This system was established to increase the research potential of the Center and to disseminate its research activities and results. To date, nine RHIC Physics Fellows have received the U.S. Department of Energy Outstanding Junior Investigator Award and over 50 Fellows have received tenure at their home institutions since the inception of the program.
Institutions interested in initiating a new RHIC Physics Fellow position may obtain details on how to proceed by contacting Maureen McNeill-Shea, 1(631) 344-2758.
D. Kharzeev, Group Leader
This group conducts QCD related research that includes heavy ion physics, the quark gluon plasma, color glass condensate and hard QCD/spin physics.
T. Izubuchi, Group Leader
This group's mission is to solve the dynamics of QCD from first principle lattice simulations using in-house computer resources.
Y. Akiba, Group Leader
This group studies the spin structure of the proton via polarized p+p collisions at RHIC as well as the properties of quark gluon plasma.
The RIKEN BNL Research Center is part of Brookhaven's Nuclear & Particle Physics Directorate.
There are no conferences scheduled at this time.
APR
22
Thursday
High-Energy Physics & RIKEN Theory Seminar
"Relaxing the Cosmological Constant and Dark Energy Radiation"
Presented by David Kaplan, Johns Hopkins University
11 am, Videoconference / Virtual Event
Thursday, April 22, 2021, 11:00 am
Hosted by: Julia Gehrlein
Abstract: The smallness of the cosmological constant has yet to be understood in our current theories of nature. I will argue that a dynamical (and non-antropic) explanation suggests that today's dark energy has a dynamical component. I will show that if dark energy evolves in time, its dynamical component could be dominated by a bath of dark radiation. Within current constraints this radiation could have up to ∼103 times more energy density than the cosmic microwave background. I will show models that produce different forms of dark radiation such as hidden photons, milli-charged particles and even Standard Model neutrinos. I will also show that the late-time cosmology is potentially distinguishable from a cosmological constant or normal quintessence. If the radiation couples to the standard model, it may be directly testable in laboratory experiments!
APR
23
Friday
Nuclear Physics & RIKEN Theory Seminar
"Efficient integration of gradient flow in lattice gauge theory and properties of low-storage commutator-free Lie group methods"
Presented by Alexei Bazavov, Michigan State University
9:15 am, Videoconference / Virtual Event
Friday, April 23, 2021, 9:15 am
Hosted by: Semeon Valgushev
Abstract: Gradient flow is a smoothing procedure that suppresses ultraviolet fluctuations of gauge fields. It is often used for high-precision scale setting and renormalization of operators in lattice QCD calculations. The gradient flow equation is defined on the SU(3) manifold and therefore requires geometric, or structure-preserving, integration methods to obtain its numerical solutions. I discuss the properties of the three-stage third-order Runge-Kutta integrator introduced by Luescher (that became almost the default choice in lattice QCD applications) and its relation to structure-preserving integrators available in the literature. I demonstrate how classical low-storage Runge-Kutta methods can be turned into structure-preserving integration methods and how schemes of order higher than three can be built. Based on the properties of the low-storage schemes I discuss how the methods can be tuned for optimal performance in lattice QCD or any other applications.