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One-point functions of certain non-protected scalar operators in the defect CFT dual to the D3-D5 probe brane system with k units of world volume flux can be expressed as overlaps between Bethe eigenstates of the Heisenberg spin chain and a…

High Energy Physics - Theory · Physics 2016-03-23 Isak Buhl-Mortensen , Marius de Leeuw , Charlotte Kristjansen , Konstantin Zarembo

We propose a closed formula for the tree-level one-point functions of non-protected operators belonging to an SU(3) sub-sector of the defect CFT dual to the D3-D5 probe brane system with background gauge field flux, k, valid for k=2. The…

High Energy Physics - Theory · Physics 2016-10-26 Marius de Leeuw , Charlotte Kristjansen , Stefano Mori

We study the matrix product state which appears as the boundary state of the AdS/dCFT set-up where a probe D7 brane wraps two two-spheres stabilized by fluxes. The matrix product state plays a dual role, on one hand acting as a tool for…

High Energy Physics - Theory · Physics 2019-09-18 Marius de Leeuw , Charlotte Kristjansen , Kasper E. Vardinghus

We study tree level one-point functions of non-protected scalar operators in the defect CFT, based on N=4 SYM, which is dual to the SO(5) symmetric D3-D7 probe brane system with non-vanishing instanton number. Whereas symmetries prevent…

High Energy Physics - Theory · Physics 2018-06-06 Marius de Leeuw , Charlotte Kristjansen , Georgios Linardopoulos

We calculate planar tree level one-point functions of non-protected operators in the defect conformal field theory dual to the D3-D5 brane system with k units of the world volume flux. Working in the operator basis of Bethe eigenstates of…

High Energy Physics - Theory · Physics 2015-09-30 Marius de Leeuw , Charlotte Kristjansen , Konstantin Zarembo

A D3-D5 intersection gives rise to a defect CFT, wherein the rank of the gauge group jumps by k units across a domain wall. The one-point functions of local operators in this set-up map to overlaps between on-shell Bethe states in the…

High Energy Physics - Theory · Physics 2020-05-06 Charlotte Kristjansen , Dennis Müller , Konstantin Zarembo

In this review we discuss recent advances in the computation of one-point functions in defect conformal field theories with holographic duals. We briefly review the appearance of integrable spin chains in N=4 super Yang--Mills theory and…

High Energy Physics - Theory · Physics 2020-08-26 Marius de Leeuw

Using considerations based on the thermodynamical Bethe ansatz as well representation theory of twisted Yangians we derive an exact expression for the overlaps between the Bethe eigenstates of the $SO(6)$ spin chain and matrix product…

High Energy Physics - Theory · Physics 2022-07-19 Marius de Leeuw , Tamás Gombor , Charlotte Kristjansen , Georgios Linardopoulos , Balázs Pozsgay

We calculate the leading contributions to the connected two-point functions of protected scalar operators in the defect version of N=4 SYM theory which is dual to the D5-D3 probe-brane system with k units of background gauge field flux.…

High Energy Physics - Theory · Physics 2022-08-24 Marius de Leeuw , Asger C. Ipsen , Charlotte Kristjansen , Kasper E. Vardinghus , Matthias Wilhelm

We take the first step in extending the integrability approach to one-point functions in AdS/dCFT to higher loop orders. More precisely, we argue that the formula encoding all tree-level one-point functions of SU(2) operators in the defect…

High Energy Physics - Theory · Physics 2018-01-03 Isak Buhl-Mortensen , Marius de Leeuw , Asger C. Ipsen , Charlotte Kristjansen , Matthias Wilhelm

We propose a new class of holographic dualities between certain, generically non supersymmetric, defect conformal field theories (dCFTs) and their gravity duals. Our construction interpolates between the 1/2-BPS D3-D3 system and its field…

High Energy Physics - Theory · Physics 2026-04-27 George Georgiou , Dimitrios Zoakos

Via a challenging field-theory computation, we confirm a supergravity prediction for the non-supersymmetric D3-D7 probe-brane system with probe geometry AdS_4 x S^2 x S^2, stabilized by fluxes. Supergravity predicts, in a certain…

High Energy Physics - Theory · Physics 2019-01-14 Aleix Gimenez Grau , Charlotte Kristjansen , Matthias Volk , Matthias Wilhelm

We find a closed formula for the overlap of Bethe eigenstates of an alternating $SU(4)$ spin chain, describing the scalar sector of ABJM theory, and matrix product states of any bond dimension representing 1/2 BPS co-dimension one domain…

High Energy Physics - Theory · Physics 2022-09-07 Tamas Gombor , Charlotte Kristjansen

We propose and study a new holographic duality between a non-supersymmetric defect conformal field theory (dCFT) and its gravity dual. On the gravity side, the defect is realised by a novel solution of a D5 probe brane embedded in the…

High Energy Physics - Theory · Physics 2025-09-15 George Georgiou , Georgios Linardopoulos , Dimitrios Zoakos

Invoking a quantum dressing procedure as well as the representation theory of twisted Yangians we derive a number of summation formulas for the overlap between integrable matrix product states and Bethe eigenstates which involve only…

High Energy Physics - Theory · Physics 2025-01-07 Tamas Gombor , Charlotte Kristjansen , Vasileios Moustakis , Xin Qian

We generalize earlier results on one-point functions in N = 4 SYM with a co-dimension one defect, dual to the D3-D5-brane setup in type IIB string theory on AdS5xS5, to a similar setup in the $\beta$-deformed version of the theory. The…

High Energy Physics - Theory · Physics 2018-12-05 Erik Widen

Integrable boundary states can be built up from pair annihilation amplitudes called $K$-matrices. These amplitudes are related to mirror reflections and they both satisfy Yang Baxter equations, which can be twisted or untwisted. We relate…

High Energy Physics - Theory · Physics 2020-12-02 Tamas Gombor , Zoltan Bajnok

We derive one-point functions in 4d $\mathcal N=4$ SYM with $\tfrac{1}{2}$-BPS boundaries, defects and interfaces which host large numbers of defect degrees of freedom. The theories are engineered by Gaiotto-Witten D3/D5/NS5 brane setups…

High Energy Physics - Theory · Physics 2025-10-06 Dongming He , Christoph F. Uhlemann

We formulate and close the boundary state bootstrap for factorizing K-matrices in AdS/CFT. We found that there are no boundary degrees of freedom in the boundary bound states, merely the boundary parameters are shifted. We use this family…

High Energy Physics - Theory · Physics 2021-04-07 Tamas Gombor , Zoltan Bajnok

The psu(2,2|4) integrable super spin chain underlying the AdS/CFT correspondence has integrable boundary states which describe set-ups where k D3-branes get dissolved in a probe D5-brane. Overlaps between Bethe eigenstates and these…

High Energy Physics - Theory · Physics 2021-01-18 Charlotte Kristjansen , Dennis Müller , Konstantin Zarembo
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