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19922026
most citedNonreciprocal light transmission in parity-time-symmetric whispering-gallery microcavities

2.5k citations

Showing 2008 · hep-thShow all

7 papers · 2 filters

hep-th2008★ 5 cited

QCD-like properties for anomalous dimensions in N=4 SYM

Valentina Forini, Matteo Beccaria

In this contribution it is shown how closed formulas for anomalous dimensions of two classes of operators in N=4 SYM can be derived, either by investigating the numerics or on the…

hep-th2008★ 2 cited

Fermion-Fermion Bound State Condition for Scalar Exchanges

Stefano De Leo, Pietro Rotelli

The condition for the existence of a bound state between two fermions exchanging massive scalars is derived. For low scalar mass, we reproduce the scalar field model result. The hi…

hep-th2008★ 10 cited

The generalized scaling function of AdS/CFT and semiclassical string theory

Matteo Beccaria

Recently, Freyhult, Rej and Staudacher (FRS) proposed an integral equation determining the leading logarithmic term of the anomalous dimension of sl(2) twist-operators in N=4 SYM f…

hep-th2008★ 5 cited

On the strong coupling expansion in the su(1|1) sector of N=4 SYM

Matteo Beccaria

We consider the anomalous dimension of the fermionic highest states Tr(psi^L) in the su(1|1) sector of N=4 SYM at strong coupling. In the thermodynamical L->OO limit it is describe…

hep-th2008★ 11 cited

Sum rules for higher twist sl(2)operators in N=4 SYM

Matteo Beccaria, Francesca Catino

The spectrum of anomalous dimensions of twist sl(2) operators in N=4 SYM has an intriguing feature in low twist 2 or 3. The anomalous dimension of the lowest state, dual a folded s…

hep-th2008★ 26 cited

Reciprocity of gauge operators in N=4 SYM

Matteo Beccaria, Valentina Forini

A recently discovered generalized Gribov-Lipatov reciprocity holds for the anomalous dimensions of various twist operators in N=4 SYM. Here, we consider a class of scaling psu(2,2|…

hep-th2008★ 2 cited

Bound State Inequality for High Mass Exchanges in a Scalar Field Model

Stefano De Leo, Pietro Rotelli

Ladder diagrams are relevant for the study of bound states. The condition upon the coupling strength for the existence of a bound state has been deduced in a scalar field theory fo…