The effective field theorist’s approach to gravitational dynamics

We review the effective field theory (EFT) approach to gravitational dynamics. We focus on extended objects in long-wavelength backgrounds and gravitational wave emission from spinning binary systems. We conclude with an introduction to EFT methods for the study of cosmological large scale structures.

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The Effective Field Theorist's Approach to Gravitational Dynamics

The black hole information paradox is among the most outstanding puzzles in physics. I argue here there is yet another black hole quandary which, in light of the recent direct detection of gravitational waves by Advanced LIGO, reveals a new window to probe the nature of spacetime in the forthcoming era of ‘precision gravity.'

The tune of love and the nature(ness) of spacetime

In The Hitchhiker's Guide to the Galaxy, by Douglas Adams, the Answer to the Ultimate Question of Life, the Universe, and Everything is found to be 42 - but the meaning of this is left open to inte ...

https://iopscience.iop.org/article/10.1088/0031-8949/92/1/012501/pdf

Life, the Universe, and everything—42 fundamental questions

We present a list of open questions in mathematical physics. After a historical introduction, a number of problems in a variety of different fields are discussed, with the intention of giving an overall impression of the current status of mathematical physics, particularly in the topical fields of classical general relativity, cosmology and the quantum realm. This list is motivated by the recent article proposing 42 fundamental questions (in physics) which must be answered on the road to full enlightenment. But paraphrasing a famous quote by the British football manager Bill Shankly, in response to the question of whether mathematics can answer the Ultimate Question of Life, the Universe, and Everything, mathematics is, of course, much more important than that.

Open problems in mathematical physics

I discuss the central challenges to fundamental physics raised by the discovery of the Higgs, revolving around ?naturalness? and its discontents

http://iopscience.iop.org/article/10.1088/0031-8949/2013/T158/014023/pdf

Nima Arkani-Hamed

Papers

Beyond the Standard Model theory