Precision benchmark calculations for four particles at unitarity

نویسندگان

  • Shahin Bour
  • Xin Li
  • Dean Lee
  • Ulf-G. Meißner
  • Lubos Mitas
چکیده

Shahin Bour,1 Xin Li,2 Dean Lee,2 Ulf-G. Meißner,1,3 and Lubos Mitas2 1Helmholtz-Institut für Strahlenund Kernphysik (Theorie) and Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn, Germany 2Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA 3Institut für Kernphysik (IKP-3), Institute for Advanced Simulation (IAS-4), and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Jülich, Germany (Received 19 April 2011; published 15 June 2011)

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Precise determination of the structure factor and contact in a unitary Fermi gas.

We present a high-precision determination of the universal contact parameter in a strongly interacting Fermi gas. In a trapped gas at unitarity, we find the contact to be 3.06±0.08 at a temperature of 0.08 of the Fermi temperature in a harmonic trap. The contact governs the high-momentum (short-range) properties of these systems, and this low-temperature measurement provides a new benchmark for...

متن کامل

An Asymmetric B Factory at 10 Luminosity

The physics opportunities at an asymmetric B Factory operating at the unprecedented luminosity of 10 cm" V are unique and attractive. The accelerator appears to be practical and the challenges of performing a sensitive experiment in this environment can be met. PHYSICS MOTIVATION The physics of flavor is central to our understanding of the structure of matter. Recent developments in the quark a...

متن کامل

Four - Particle Phase Space Integrals in Massless QCD

The inclusive four-particle phase space integral of any 1 → 4 matrix element in massless QCD contains divergences due to the soft and collinear emission of up to two particles in the final state. We show that any term appearing in this phase space integral can be expressed as linear combination of only four master integrals. These four master integrals are all computed in dimensional regularisa...

متن کامل

Universality in Few-body Systems with Large Scattering Length

Particles with short-range interactions and a large scattering length have universal low-energy properties that do not depend on the details of their structure or their interactions at short distances. In the 2-body sector, the universal properties are familiar and depend only on the scattering length a. In the 3-body sector for identical bosons, the universal properties include the existence o...

متن کامل

Progress on Ultraviolet Finiteness of Supergravity

In this lecture we summarize recent calculations pointing to the possible ultraviolet finiteness of N = 8 supergravity in four dimensions. We outline the modern unitarity method, which enables multiloop calculations in this theory and allows us to exploit a remarkable relation between tree-level gravity and gauge-theory amplitudes. We also describe a link between observed cancellations at loop ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2011