Blog
- 15 min read
ML, Physics
AstroCLIP Update
An update of the AstroCLIP model with much improved performance and a web UI for galaxy search.
- 20 min read
ML
Counting in Context
We introduce the Contextual Counting task, a new toy problem aimed at exploring interpretability of Transformer models in quantitative domains.
- 15 min read
ML
xVal Number Encoding
We introduce xVal, a new number encoding scheme for LLMs. Using xVal with a modified number inference method makes LLMs continuous function approximators. This makes them have a better inductive bias for data analysis in scientific domains.
- 10 min read
ML
Backdrop: Stochastic Backprop
Backdrop is a proposed method for increasing stochasticity when performing gradient descent on objectives that are not decomposable over smaller minibatches.
- 5 min read
Physics
Particle-Hole Symmetry and Quantum Hall
We construct an effective field theory of composite Dirac fermions for the Jain sequences of quantum Hall plateaux. Using a Fermi liquid description, we derive the Girvin-Macdonald-Platzman algebra, calculate the dispersion of neutral excitations, and compute the electromagnetic response functions.
- 10 min read
Physics
Gravitational Anomalies in Field Theory
We analyze the effect of a global gravitational anomaly (that of the Dehn twist) and show that it has measurable consequences for low energy physics.
- 5 min read
Physics
Superfluids and Holography
Using a holographic setup we computed the hall viscosity of chiral p-wave superfluids and found that the zero temperature relationship between the superfluid density and Hall viscosity holds at all temperatures.
- 10 min read
Physics
Hall Viscosity, Spin Density, and Torsion
We clarify the relationship between Hall viscosity and space-time torsion by showing the consistent definition of these quantities in the first-order formulation of general relativity.
- 10 min read
Physics
Non-Relativistic CFT Operator Algebras
By analyzing the relationship between various operators in non-relativist conformal field theories, we derive a family of conservation laws.
- 5 min read
Physics
The Euler Current
We construct a relativistic current in odd dimensions whose conserved charge is the Euler characteristic in the codimension 1 even dimensional space.
- 10 min read
Physics
Magneto-Roton and Quantum Hall
Using a generic parametrization for the spectral densities of the energy-momentum tensor we find relationships between various physical properties of the system. These spectral densities can be described as the probabilities for absorption or emission of circularly polarized gravitons by the quantum Hall system.
- 5 min read
Physics
Chiral Vortical Effect Renormalization
We show that the coefficient of the Chiral Vortical Effect is fixed by quantum field theory loop calculation arguments.