activity
20172025
most citedAbsorption of closed strings by giant gravitons

30 citations · 129 across the 12 of their papers we have counts for

collaborators

12 papers

hep-th2025

Collective Theory at Finite-: Reduction of the Emergent Hilbert Space

Robert de Mello Koch, Antal Jevicki, Garreth Kemp +1

Continuing the formulation of finite Hilbert spaces in emergent theories we study in this work symmetric collective models. For the case of bosons in dimensions…

hep-th2025

From Symmetry to Structure: Gauge-Invariant Operators in Multi-Matrix Quantum Mechanics

Robert de Mello Koch, Minkyoo Kim, Hendrik J. R. Van Zyl

Recently the algebraic structure of gauge-invariant operators in multi-matrix quantum mechanics has been clarified: this space forms a module over a freely generated ring. The ring…

hep-th2024

Reconstructing the spacetime dual to a free matrix

Robert de Mello Koch, Pratik Roy, Hendrik J. R. Van Zyl

In this paper we consider the collective field theory description of the singlet sector of a free matrix field in 2+1 dimensions. This necessarily involves the study of -local c…

hep-th2020★ 10 cited

Scrambling in Yang-Mills

Robert de Mello Koch, Eunice Gandote, Augustine Larweh Mahu

Acting on operators with a bare dimension the dilatation operator of super Yang-Mills theory defines a 2-local Hamiltonian acting on a graph. Degree…

hep-th2020★ 10 cited

Emergent Yang-Mills theory

Robert de Mello Koch, Jia-Hui Huang, Minkyoo Kim +1

We study the spectrum of anomalous dimensions of operators dual to giant graviton branes. The operators considered belong to the su sector of super Yang-Mills t…

hep-th2020★ 11 cited

Central Charges for the Double Coset

Shaun de Carvalho, Robert de Mello Koch, Minkyoo Kim

The state space of excited giant graviton brane systems is given by the Gauss graph operators. After restricting to the sector of the theory, we consider this state space…

hep-th2019★ 7 cited

Holography for Tensor models

Robert de Mello Koch, David Gossman, Nirina Hasina Tahiridimbisoa +1

In this article we explore the holographic duals of tensor models using collective field theory. We develop a description of the gauge invariant variables of the tensor model. This…

hep-th2019★ 16 cited

Structure constants of heavy operators in ABJM/ABJ Theory

Gaoli Chen, Robert de Mello Koch, Minkyoo Kim +1

Efficient and powerful approaches to the computation of correlation functions involving determinant, sub-determinant and permanent operators, as well as traces, have recently been…

hep-th2019★ 30 cited

Absorption of closed strings by giant gravitons

Gaoli Chen, Robert de Mello Koch, Minkyoo Kim +1

A new approach to the computation of correlation functions involving two determinant operators as well as one non-protected single trace operator has recently been developed by Jia…

hep-th2019★ 26 cited

Spectral Form Factor as an OTOC Averaged over the Heisenberg Group

Robert de Mello Koch, Jia-Hui Huang, Chen-Te Ma +1

We prove that in bosonic quantum mechanics the two-point spectral form factor can be obtained as an average of the two-point out-of-time ordered correlation function, with the aver…

hep-th2019★ 10 cited

Non-Perturbative String Theory from AdS/CFT

Robert de Mello Koch, Eunice Gandote, Jia-Hui Huang

The large expansion of giant graviton correlators is considered. Giant gravitons are described using operators with a bare dimension of order . In this case the usual …

hep-th2017★ 9 cited

Free quantum fields in 4D and Calabi-Yau spaces

Robert de Mello Koch, Phumudzo Rabambi, Randle Rabe +1

We develop general counting formulae for primary fields in free four dimensional (4D) scalar conformal field theory (CFT). Using a duality map between primary operators in scalar f…