1 Many Body Studies of PNC/EDM as prob of physics beyond the Standard Mode Geetha Gopakumar (TMU, Japan) Prof. Bhanu Pratap Das (IIA, India) Prof. D. Mukherjee (IACS, India) Prof. Kimihiko Hirao (RIKEN, Japan) Prof. Hada (TMU, Japan) Minori Abe (TMU, Japan)
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Many Body Studies of PNC/EDM as probes of physics beyond the Standard Model
• E1PNC (P Violation) and EDM (P and T Violation) • Sources of PNC/EDMs in atoms
• Computation of E1PNC/EDMs – Requirement of atomic many-body theory
• Coupled Cluster Method – IP, EE, lifetime, hyperfine constant and E1PNC• Present Limits and Implications for Particle Physics
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Standard Model in Particle Physics
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The Royal Swedish Academy of Sciences has decided to award the Nobel
Prize in Physics for 2008 with one half to
Yoichiro Nambu, Enrico Fermi Institute, University of Chicago, IL, USA
"for the discovery of the mechanism of spontaneous broken
symmetry in subatomic physics"
and the other half jointly to
Makoto Kobayashi, High Energy Accelerator Research Organization
(KEK), Tsukuba, Japan and Toshihide Maskawa, Yukawa Institute for
Theoretical Physics (YITP), Kyoto University, and Kyoto Sangyo University,
Japan
"for the discovery of the origin of the broken symmetry which
predicts the existence of at least three families of quarks in
nature"
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Fundamental transformation leading to symmetries
C Particle ---------------- antiparticle (Q > -Q)
Position --------------- inverted (r > -r)
T Time ----------------- reversed (t > -t )
Charge-Parity-Time Reversal – CPT theorem
This means that if any particle is replaced with its corresponding antiparticle, and the space coordinate and time are reversed, the physical laws are unchanged.
A Physical system/process can violate each of these symmetries individually as long as the combined CPT is conserved
A symmetry of a physical system is a physical or mathematical feature of the system (observed or intrinsic) that is "preserved"
under some change
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P Violation – E1PNC State vector under parity transformation
Hamiltonian under parity transformation
ie.
[Parity Conservation ] Systems of Interest > Atom where chiral property arises from
the interactions between the constituents which favours one orientation with respect to other
Weak Interactions > Nucleons and Electrons (Parity non conserving)