58 citations · 116 across the 5 of their papers we have counts for
7 papers
Reflections on Parity Breaking
Jacob McNamara, Matthew Reece
Parity and CP symmetries are broken in the world around us. Nonetheless, parity (or CP) may be a gauge symmetry which is higgsed in our universe. This is assumed in many scenarios…
Gravitational Solitons and Completeness
Jacob McNamara
We show that gravitational solitons naturally carry gauge charges beyond those of any local quantum field. The effect of these charged excitations is to break a non-invertible symm…
Non-Invertible Global Symmetries and Completeness of the Spectrum
Ben Heidenreich, Jacob McNamara, Miguel Montero +3
It is widely believed that consistent theories of quantum gravity satisfy two basic kinematic constraints: they are free from any global symmetry, and they contain a complete spect…
Baby Universes, Holography, and the Swampland
Jacob McNamara, Cumrun Vafa
On the basis of a number of Swampland conditions, we argue that the Hilbert space of baby universe states must be one-dimensional in a consistent theory of quantum gravity. This sc…
Cobordism Classes and the Swampland
Jacob McNamara, Cumrun Vafa
We argue that any proposed quantum theory of gravity with non-trivial cobordism classes in the space of configurations belongs to the Swampland. The argument is based on the assump…
Topological Chern-Simons/Matter Theories
Mina Aganagic, Kevin Costello, Jacob McNamara +1
We propose a new partially topological theory in three dimensions which couples Chern-Simons theory to matter. The 3-manifolds needed for this construction admit transverse holomor…