Energy transfer collisions between two polar molecules: quantum-mechanical treatment of ultracold HD+HD as a probing system: applications in Bose-Einstein Condensate and in quantum computation

• Grant number: 10/00023-2
• Support Opportunities: Research Grants - Visiting Researcher Grant - International
• Start date: January 05, 2011
• End date: February 13, 2011
• Field of knowledge: Physical Sciences and Mathematics - Physics - Atomic and Molecular Physics
• Principal Investigator: Sadhan Kumar Adhikari
• Grantee: Sadhan Kumar Adhikari
• Visiting researcher: Renat Sultanov
• Visiting researcher institution: St. Cloud State University , United States
• Host Institution: Instituto de Física Teórica (IFT). Universidade Estadual Paulista (UNESP). Campus de São Paulo. São Paulo , SP, Brazil
• City of the host institution: São Paulo

Abstract

Recent creation and investigation of a quantum gas of ultracold polarmolecules is of a great scientific interest. The dynamics of ultracoldpolar molecules is of interest to Bose-Einstein condensation and quantuminformation processing. In ordinary atoms the interactions are spatiallyisotropic, very short-range and actually, in practice, can beapproximated by simple contact (delta-function) interaction. For polarmolecules the interaction is anisotropic and of long range. This makesthe study of dynamics of ultracold polar molecules a novel task. We planto study the quantum mechanical collision of two identical deuteratedhydrogen molecules (HD) with permanent dipole moment: HD+HD-> HD+HD. Weshall use coordinate space scattering equations for this purpose andcalculate the cross sections and transfer rates in this system. (AU)