| 1. | Claudia de Rham, Case Western Reserve University Invited Talk: Non-trivial vacua October 12, 2015 (10:15 AM - 10:40 AM) PDF, 3.62 MB |
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| 3. | Gregory Gabadadze, New York University Invited Talk: A New Approach to Big Cosmological Constant and Dark Energy October 12, 2015 (2:40 PM - 3:05 PM) PDF, 0.32 MB |
| 4. | Kurt Hinterbichler, Perimeter Institute for Theoretical Physics Invited Talk: A Stueckelberg approach to quadratic curvature gravity and its decoupling limits October 12, 2015 (4:30 PM - 4:55 PM) PDF, 9.73 MB |
| 5. | Lam Hui, Columbia University Invited Talk: Symmetries in gravity and large scale structure October 13, 2015 (2:30 PM - 2:55 PM) |
| 6. | Nemanja Kaloper, University of California, Davis Invited Talk: Lambda: The Sequester October 14, 2015 (11:20 AM - 11:45 AM) |
| 7. | Kazuya Koyama, Insitute of Cosmology and Gravitation, University of Portsmouth Invited Talk: Phenomenology of beyond Horndeski theories October 13, 2015 (11:20 AM - 11:45 AM) PPTX, 2.37 MB |
| 8. | David Langlois, Astroparticle and Cosmology Laboratory, Paris Invited Talk: Exploring theories beyond Horndeski October 13, 2015 (9:40 AM - 10:05 AM) PDF, 3.4 MB |
| 9. | Andrew Matas, Case Western Reserve University Poster: Charged Spin 2 Fields October 12 - 14, 2015 In light of recent progress in ghost-free theories of massive gravity and multi-gravity, we reconsider the problem of constructing a ghost-free theory of an interacting spin-2 field charged under a U(1) gauge symmetry. Our starting point is the theory originally proposed by Federbush, which is essentially Fierz–Pauli generalized to include a minimal coupling to a U(1) gauge field. We show the Federbush theory with a dynamical U(1) field is in fact ghost-free and can be treated as a healthy effective field theory to describe a massive charged spin-2 particle. It can even potentially have healthy dynamics above its strong-coupling scale. We then construct candidate gravitational extensions to the Federbush theory both by using dimensional deconstruction, and by constructing a general nonlinear completion. However, we find that the U(1) symmetry forces us to modify the form of the Einstein–Hilbert kinetic term. By performing a constraint analysis directly in the first-order form, we show that these modified kinetic terms inevitably reintroduce the Boulware–Deser ghost. As a by-product of our analysis, we present a new proof for ghost-freedom of bi-gravity in 2+1 dimensions (also known as Zwei-Dreibein gravity). We also give a complementary algebraic argument that the Einstein–Hilbert kinetic term is incompatible with a U(1) symmetry, for a finite number of gravitons. |
| 10. | Shinji Mukohyama, Yukawa Institute for Theoretical Physics, Kyoto University Invited Talk: Massive gravity and cosmology October 13, 2015 (4:20 PM - 4:45 PM) PDF, 1.4 MB |
| 11. | Alberto Nicolis, Columbia University in the City of New York Invited Talk: Icosahedral inflation October 14, 2015 (9:40 AM - 10:05 AM) PDF, 6.89 MB |
| 12. | Gustavo Niz, University of Guanajuato, Mexico Invited Talk: On the Vainshtein mechanism October 13, 2015 (11:55 AM - 12:20 PM) PDF, 1.13 MB |
| 13. | Rachel A. Rosen, Columbia University in the City of New York Invited Talk: On Recent Developments in Partially Massless Gravity October 12, 2015 (9:40 AM - 10:05 AM) |
| 14. | Teruaki Suyama, Research Center for the Early Universe, University of Tokyo Invited Talk: Spontaneous scalarization: asymmetron as dark matter October 12, 2015 (11:55 AM - 12:20 PM) PDF, 1.41 MB |
| 15. | Gianmassimo Tasinato, Swansea University Invited Talk: Vector fields, galileons, and modified gravity October 13, 2015 (3:05 PM - 3:30 PM) PDF, 27.68 MB |
| 16. | Filippo Vernizzi, CEA Invited Talk: A unifying description of dark energy October 13, 2015 (10:15 AM - 10:40 AM) PDF, 6.2 MB |
| 17. | Masahide Yamaguchi, Tokyo Institute of Technology Invited Talk: Perturbations of Cosmological and Black Hole Solutions in Massive gravity and Bi-gravity October 12, 2015 (11:20 AM - 11:45 AM) PDF, 0.91 MB |
| 18. | George Zahariade, University of California, Davis Invited Talk: A manifestly local theory of vacuum energy sequestering October 12, 2015 (3:15 PM - 3:40 PM) PPTX, 0.17 MB |
| Overview | Participants | Program | Presentations | KICP |
