My research centers on the understanding of the strong and weak interaction gauge theories of elementary particles. In particular, I work on developing quantum field theoretic tools to study the interplay of the these interactions as well as physics beyond the standard model. I am also presently working on  the more speculative topic of theories of extra dimensions

Selected Publications

Rafael A. Porto (UC, Santa Barbara), Ira Z. Rothstein (Carnegie Mellon U.) . “Spin(1)Spin(2) Effects in the Motion of Inspiralling Compact Binaries at Third Order in the Post-Newtonian Expansion”,  (Feb 2008). 29pp.  e-Print: arXiv:0802.0720 [gr-qc]

Ambar Jain (MIT, LNS) , Ira Z. Rothstein (Carnegie Mellon U.) , Iain W. Stewart (MIT, LNS)  “Penguin Loops for Nonleptonic B-Decays in the Standard Model: Is there a Penguin Puzzle?”, MIT-CTP-3828, (Jun 2007). 39pp. e-Print: arXiv:0706.3399 [hep-ph]

Jacques Distler (Texas U.) , Benjamin Grinstein (UC, San Diego) , Rafael A. Porto, Ira Z. Rothstein (Carnegie Mellon U.) . “Falsifying Models of New Physics via WW Scattering”. UCSD-PTH-06-06, UTTTG-06-06, CMUHEP-06-07, Apr 2006. 4pp.   Published in Phys.Rev.Lett.98:041601,(2007).   e-Print: hep-ph/0604255

Yi-Zen Chu, Walter D. Goldberger (Yale U.) , Ira Z. Rothstein (Carnegie Mellon U.) . “Asymptotics of d-dimensional Kaluza-Klein black holes: Beyond the Newtonian approximation”.  Feb 2006. 18pp.   Published in JHEP 0603:013, (2006).
e-Print: hep-th/0602016

Christian W. Bauer (LBL, Berkeley) , Ira Z. Rothstein (Carnegie Mellon U.), Iain W. Stewart (MIT, LNS) . “SCET analysis of B ---> K pi, B ---> K anti-K, and B ---> pi pi decays”.  MIT-CTP-3688, LBNL-58941, CMU-TH-05-08, Oct 2005. 23pp.
Published in Phys.Rev.D74:034010, (2006).  e-Print: hep-ph/0510241