6 papers · 1 filter
Feynman rules for non-perturbative sectors and anomalous supersymmetry Ward identities
A. Casher, Y. Shamir
We show that supersymmetry Ward identities contain an anomalous term which takes the form of a surface term in Hilbert space. In the one-instanton sector the anomalous term is the…
Is the Planck Momentum Attainable?
Aharon Casher, Shmuel Nussinov
We present evidence that an interplay of the laws of microphysics and cosmology renders the Planck momentum unattainable by an elementary particle. Several categories of accelerato…
A Supersymmetry Anomaly
Aharon Casher, Yigal Shamir
A supersymmetry anomaly is found in the presence of non-perturbative fields. When the action is expressed in terms of the correct quantum variables, anomalous surface terms appear…
Anomalous Supersymmetry Breaking by Instantons
A. Casher, V. Elkonin, Y. Shamir
We show that instantons violate a supersymmetric identity in a classically supersymmetric Higgs model with no massless fermions. This anomalous breaking arises because the correct…
Explicit breaking of supersymmetry by non-perturbative effects
A. Casher, V. Elkonin, Y. Shamir
Instanton effects in a family of completely massive Higgs models with N=1 supersymmetry are investigated. The models have and . In each model, we show that a cert…
Illusory Quantum Hair
A. Casher, O. Pelc
We analyze the quantum hair model proposed recently by Coleman, Preskill and Wilczek. We give arguments suggesting that the potential hair is expected to be destroyed by the instab…