433 citations · 1.2k across the 29 of their papers we have counts for
29 papers
Cosmic time evolution and propagator from a Yang-Mills matrix model
Joanna L. Karczmarek, Harold C. Steinacker
We consider a solution of a IKKT-type matrix model which can be considered as a 1+1-dimensional space-time with Minkowski signature and a Big Bounce-like singularity. A suitable $i…
On the infrared divergence and global colour in N=4 Yang-Mills theory
Su Yu Ding, Joanna Karczmarek, Gordon W. Semenoff
The N=4 superconformal Yang-Mills theory on flat four-dimensional Minkowski space is a de-confined gauge theory in the sense that the string tension for fundamental representation…
Areas and entropies in BFSS/gravity duality
Tarek Anous, Joanna L. Karczmarek, Eric Mintun +2
The BFSS matrix model provides an example of gauge-theory / gravity duality where the gauge theory is a model of ordinary quantum mechanics with no spatial subsystems. If there exi…
Entanglement entropy on a fuzzy sphere with a UV cutoff
Hong Zhe Chen, Joanna L. Karczmarek
We introduce a UV cutoff into free scalar field theory on the noncommutative (fuzzy) two-sphere. Due to the IR-UV connection, varying the UV cutoff allows us to control the effecti…
Noncommutative spaces and matrix embeddings on flat R^{2n+1}
Joanna L. Karczmarek, Ken Huai-Che Yeh
We conjecture an embedding operator which assigns, to any 2n+1 hermitian matrices, a 2n-dimensional hypersurface in flat (2n + 1)-dimensional Euclidean space. This corresponds to p…
Emergent geometry of membranes
Mathias Hudoba de Badyn, Joanna L. Karczmarek, Philippe Sabella-Garnier +1
In work arXiv:1204.2788, a surface embedded in flat is associated to any three hermitian matrices. We study this emergent surface when the matrices are large, by constructing…