Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Ipsen, Asger C."'
Autor:
Ipsen, Asger C.
In combination with post-selection, weak measurements can lead to surprising results known as anomalous weak values. These lie outside the bounds of the spectrum of the relevant observable, as in the canonical example of measuring the spin of an elec
Externí odkaz:
http://arxiv.org/abs/2108.04733
Autor:
Ipsen, Asger C., Vardinghus, Kasper E.
We compute the dilatation operator for local "open string" operators situated at the interface of a certain supersymmetric defect version of $\mathcal{N}=4$ super-Yang-Mills theory. This field theory is dual to a probe D5-brane intersecting a stack o
Externí odkaz:
http://arxiv.org/abs/1909.12181
We investigate the one-loop spectral problem of $\gamma$-twisted, planar $\mathcal{N}$=4 Super Yang-Mills theory in the double-scaling limit of infinite, imaginary twist angle and vanishing Yang-Mills coupling constant. This non-unitary model has rec
Externí odkaz:
http://arxiv.org/abs/1812.08794
Autor:
de Leeuw, Marius, Ipsen, Asger C., Kristjansen, Charlotte, Vardinghus, Kasper E., Wilhelm, Matthias
Publikováno v:
JHEP 08 (2017) 020
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. This involves
Externí odkaz:
http://arxiv.org/abs/1705.03898
Autor:
Buhl-Mortensen, Isak, de Leeuw, Marius, Ipsen, Asger C., Kristjansen, Charlotte, Wilhelm, Matthias
Publikováno v:
Phys. Rev. Lett. 119, 261604 (2017)
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 version of
Externí odkaz:
http://arxiv.org/abs/1704.07386
Autor:
Buhl-Mortensen, Isak, de Leeuw, Marius, Ipsen, Asger C., Kristjansen, Charlotte, Wilhelm, Matthias
Publikováno v:
JHEP 1701 (2017) 098
We build the framework for performing loop computations in the defect version of N=4 super Yang-Mills theory which is dual to the probe D5-D3 brane system with background gauge-field flux. In this dCFT, a codimension-one defect separates two regions
Externí odkaz:
http://arxiv.org/abs/1611.04603
Publikováno v:
Phys.Lett.B 768 (2017) 192-197
We initiate the calculation of quantum corrections to Wilson loops in a class of four-dimensional defect conformal field theories with vacuum expectation values based on N=4 super Yang-Mills theory. Concretely, we consider an infinite straight Wilson
Externí odkaz:
http://arxiv.org/abs/1608.04754
Autor:
Buhl-Mortensen, Isak, de Leeuw, Marius, Ipsen, Asger C., Kristjansen, Charlotte, Wilhelm, Matthias
Publikováno v:
Phys. Rev. Lett. 117, 231603 (2016)
We initiate the calculation of loop corrections to correlation functions in 4D defect CFTs. More precisely, we consider N=4 SYM with a codimension-one defect separating two regions of space, x_3>0 and x_3<0, where the gauge group is SU(N) and SU(N-k)
Externí odkaz:
http://arxiv.org/abs/1606.01886
Autor:
Ipsen, Asger C.
Publikováno v:
Phys. Rev. A 91, 062120 (2015)
The role of measurement induced disturbance in weak measurements is of central importance for the interpretation of the weak value. Uncontrolled disturbance can interfere with the postselection process and make the weak value dependent on the details
Externí odkaz:
http://arxiv.org/abs/1409.3538
Autor:
Ipsen, Asger C.
We propose an error-disturbance relation for general observables on finite dimensional Hilbert spaces based on operational notions of error and disturbance. For two-dimensional systems we derive tight inequalities expressing the trade-off between acc
Externí odkaz:
http://arxiv.org/abs/1311.0259