YCAA Logo
YCAA Logo
The Crab Nebula in Blue and White Credit & Copyright: Jay Gallagher (U. Wisc.),
The Crab Nebula in Blue and White Credit & Copyright: Jay Gallagher (U. Wisc.),
Interstellar Dust-Bunnies of NGC 891 Credit: C. Howk & B. Savage (Wisconsin);
Interstellar Dust-Bunnies of NGC 891 Credit: C. Howk & B. Savage (Wisconsin);
Hubble. Credit: R. Williams (STScI), the Hubble Deep Field-South Team, and NASA
Hubble. Credit: R. Williams (STScI), the Hubble Deep Field-South Team, and NASA
Dumbell. Credit & (c): Michael Pierce (Indiana U.) et al., WIYN, AURA, NOAO, NSF
Dumbell. Credit & (c): Michael Pierce (Indiana U.) et al., WIYN, AURA, NOAO, NSF
Abell 39.    (c): George Jacoby (WIYN Obs.) et al., WIYN, AURA, NOAO, NSF
Abell 39. (c): George Jacoby (WIYN Obs.) et al., WIYN, AURA, NOAO, NSF
Bubbling. Credit: Jeffrey Kenney (Yale) et al., WFPC2, HST NASA
Bubbling. Credit: Jeffrey Kenney (Yale) et al., WFPC2, HST NASA

Mailing Address

Yale Center for Astronomy and Astrophysics
Physics Department
P.O. Box 208120
New Haven, CT 06520-8120

Campus Address

260 Whitney Avenue
454 J.W. Gibbs Laboratory

Telephone: (203) 432-3392

Fax: 203) 432-3824

E-mail: ycaa@yale.edu

Upcoming YCAA Seminars

Syndicate content
Updated: 13 hours 27 min ago

Nuclear Particle Astrophysics (NPA) Seminar (note special day), Stanislaw D. Glazek, University of Warsaw, Poland, "Proton radius puzzle in Hamiltonian dynamics" - Tue, September 1, 2015

Tue, 09/01/2015 - 8:27am
When: Tuesday, September 1, 2015 1:30 PM - 2:30 PM
Where:
   Wright Lab, EAL 108 Conference Room (EAL108)
   268 Whitney Avenue, New Haven 06520
   (Location is wheelchair accessible)
   Enter building through Wright Lab-West (268 Whitney). All other external doors are locked or blocked by construction.
Tags: astrophysics, nuclear_physics, particle_theory, science, seminar, talk

Speaker/Performer: Stan Glazek, University of Warsaw

Description: When lepton-proton bound-state eigenvalue equations are derived from a local quantum field theory using second-order renormalization group procedure for effective particles (RGPEP) a la QCD for heavy quarkonia, the resulting non-perturbative corrections to the Schroedinger equation appear relevant to our understanding of the proton radius puzzle. The puzzle can be described as a conclusion that the proton radius in muon-proton bound states is smaller than in the electron-proton bound states by about 4%. The RGPEP indicates instead that the radii ought to be discussed taking into account the scale difference between the effective theories required for handling different bound-states using the same Schroedinger equation. Even more intriguing, the effective non-relativistic Schroedinger dynamics for lepton-proton atoms turns out to be operating in these very low-energy systems with the same type of momentum variables that also naturally appear in the light-front holography for quark-antiquark states and in the interpretation of AdS/QFT duality in terms of the Ehrenfest theorem.

Open To: Yale Community Only
Contact Information:
   
   
   thomas.appelquist@yale.edu
   

Nuclear Particle Astrophysics (NPA) Seminar (note special day and time), Francesco D'Eramo, UC Berkeley, "Hunting for WIMPs" - Fri, May 15, 2015

Fri, 05/15/2015 - 11:28am
When: Friday, May 15, 2015 2:00 PM - 3:00 PM
Where:
   Wright Lab, EAL 108 Conference Room (EAL108)
   268 Whitney Avenue, New Haven 06520
   (Location is wheelchair accessible)
   Enter building through Wright Lab-West (268 Whitney). All other external doors are locked.
Tags: astrophysics, nuclear_physics, particle_theory, science, seminar, talk

Speaker/Performer: Francesco D'Eramo, UC Berkeley

Description: A Weakly Interacting Massive Particle (WIMP) is a well-motivated dark matter (DM) candidate that can be searched for by different experimental strategies. In this talk, I will review the complementary WIMP searches, emphasizing how they are sensitive to physics at vastly different energy scale. Crucially, such a separation of scales may have striking consequences when a connection between different experiments is attempted. This motivates the construction of an Effective Field Theory (EFT) framework to properly connect the different energy scales involved in constraining WIMP models. I will build such a formalism and I will apply it to derive model independent bounds on WIMP interactions. I will conclude with possible future directions, both on extending the EFT machinery and applications to specific models.

Open To: Yale Community Only
Contact Information:
   John Harris
   
   john.harris@yale.edu