66 citations · 116 across the 7 of their papers we have counts for
7 papers
String interactions on the random lattice
Haidong Feng, Yu-tin Huang, Warren Siegel
We combine two partons on a random lattice as a vector state. In the ladder approximation, we find that such states have 1/p^2 propagators (after tuning the mass to vanish). We als…
Yang-Mills Gauge Conditions from Witten's Open String Field Theory
Haidong Feng, Warren Siegel
We construct the Zinn-Justin-Batalin-Vilkovisky action for tachyons and gauge bosons from Witten's 3-string vertex of the bosonic open string without gauge fixing. Through canonica…
MHV Lagrangian for N=4 Super Yang-Mills
Haidong Feng, Yu-tin Huang
Here we formulate two field redefinitions for N=4 Super Yang-Mills in light cone superspace that generates only MHV vertices in the new Lagrangian. After careful consideration of t…
Random lattice superstrings
Haidong Feng, Warren Siegel
We propose some new simplifying ingredients for Feynman diagrams that seem necessary for random lattice formulations of superstrings. In particular, half the fermionic variables ap…
Gauge-covariant S-matrices for field theory and strings
Haidong Feng, Warren Siegel
S-matrices can be written Lorentz covariantly in terms of free field strengths for vector states, allowing arbitrary gauge choices. In string theory the vertex operators can be cho…
Gauge-covariant vertex operators
Haidong Feng, Warren Siegel
We derive Yang-Mills vertex operators for (super)string theory whose BRST invariance requires only the free gauge-covariant field equation and no gauge condition. Standard conforma…