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The Einstein Toolkit
One of the best known open-source tools for studying numerical relativity is the Einstein Toolkit. With it, you can simulate collisions of black holes and neutron stars, and study their...
Oct 15, 2019
Strings on the Keldysh Contour
There is a fundamental tension between what string theory computes (S-matrix elements) and what you can compute in QFT on a time-dependent backgrounds (real time operator expectation values). The prescription...
Oct 15, 2019
A Universal Operator Growth Hypothesis
Thanks to the Lanczos algorithm, the Hamiltonian dynamics of any operator can be written as a hopping problem on a semi-infinite one-dimensional chain. Our hypothesis states that the hopping strength...
Oct 15, 2019
Symmetries, Duality, and the Unity of Physics
Global symmetries and gauge symmetries have played a crucial role in physics. The idea of duality demonstrates that gauge symmetries can be emergent and might not be fundamental. During the...
Oct 16, 2019
Logarithmic Sobolev Inequalities for Quantum Many-Body Systems.
The mixing time of Markovian dissipative evolutions of open quantum many-body systems can be bounded using optimal constants of certain quantum functional inequalities, such as the logarithmic Sobolev constant. For...
Oct 16, 2019
Black Hole Entropy from Soft Hair
Black Hole Entropy is a well established concept and arises naturally once one realises that black holes are characterised by a temperature. Boltzmann established that entropy can be regarded as...
Oct 17, 2019
Flash of insight opens new paths for Luke Santi Award winner
Mackenzie Pereira’s running shoes were pounding the trail as she followed it towards the sunset. Then, her world shifted. The planet, she realized, was functioning as a treadmill. She had...
Perspectives on Matter Effects in GW170817
The detection of coalescing neutron stars via gravitational waves (GW170817) has revolutionized our understanding of the equation of state at supranuclear densities. The equation of state determines how neutron stars...
Oct 17, 2019
No entailing laws, but enablement in the evolution of the biosphere
Biological evolution is a complex blend of ever changing structural stability, variability and emergence of new phenotypes, niches, ecosystems. We wish to argue that the evolution of life marks the...
Oct 17, 2019
Field Theory With a Vector Global Symmetry
Field Theory With a Vector Global Symmetry
Oct 17, 2019