540 citations · 4.8k across the 94 of their papers we have counts for
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Invariants for (2+1)D bosonic crystalline topological insulators for all 17 wallpaper groups
Vladimir Calvera, Naren Manjunath, Maissam Barkeshli
We study bosonic symmetry-protected topological (SPT) phases in (2+1) dimensions with symmetry , where is a general wallpaper group…
Learning Pseudorandom Numbers with Transformers: Permuted Congruential Generators, Curricula, and Interpretability
Tao Tao, Maissam Barkeshli
We study the ability of Transformer models to learn sequences generated by Permuted Congruential Generators (PCGs), a widely used family of pseudo-random number generators (PRNGs).…
When Can You Get Away with Low Memory Adam?
Dayal Singh Kalra, John Kirchenbauer, Maissam Barkeshli +1
Adam is the go-to optimizer for training modern machine learning models, but it requires additional memory to maintain the moving averages of the gradients and their squares. While…
Electric polarization in Chern insulators: Unifying many-body and single-particle approaches
Yuxuan Zhang, Maissam Barkeshli
Recently, it has been established that Chern insulators possess an intrinsic two-dimensional electric polarization, despite having gapless edge states and non-localizable Wannier o…
(How) Can Transformers Predict Pseudo-Random Numbers?
Tao Tao, Darshil Doshi, Dayal Singh Kalra +2
Transformers excel at discovering patterns in sequential data, yet their fundamental limitations and learning mechanisms remain crucial topics of investigation. In this paper, we s…
Disclinations, dislocations, and emanant flux at Dirac criticality
Maissam Barkeshli, Christopher Fechisin, Zohar Komargodski +1
What happens when fermions hop on a lattice with crystalline defects? The answer depends on topological quantum numbers which specify the action of lattice rotations and translatio…