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7 papers · 2 filters
Spacetime Entanglement Entropy in 1+1 Dimensions
Mehdi Saravani, Rafael D. Sorkin, Yasaman K. Yazdi
arXiv:1205.2953 defines an entropy for a gaussian scalar field in an arbitrary region of either a causal set or a continuous spacetime, given only the correlator $\langleϕ(x)ϕ(…
A Naturally Light Dilaton and a Small Cosmological Constant
B. Bellazzini, C. Csaki, J. Hubisz +2
We present a non-supersymmetric theory with a naturally light dilaton. It is based on a 5D holographic description of a conformal theory perturbed by a close-to-marginal operator o…
Entanglement and Particle Identity: A Unifying Approach
A. P. Balachandran, T. R. Govindarajan, Amilcar R. de Queiroz +1
It has been known for some years that entanglement entropy obtained from partial trace does not provide the correct entanglement measure when applied to systems of identical partic…
Tumbling through a landscape: Evidence of instabilities in high-dimensional moduli spaces
Brian Greene, David Kagan, Ali Masoumi +3
We argue that a generic instability afflicts vacua that arise in theories whose moduli space has large dimension. Specifically, by studying theories with multiple scalar fields we…
Quantum Entropic Ambiguities: Ethylene
A. P. Balachandran, Amilcar R. de Queiroz, S. Vaidya
In a quantum system, there may be many density matrices associated with a state on an algebra of observables. For each density matrix, one can compute its entropy. These are in gen…
Spontaneous Lorentz Violation in Gauge Theories
A. P. Balachandran, S. Vaidya
Frohlich, Morchio and Strocchi long ago proved that Lorentz invariance is spontaneously broken in QED because of infrared effects. We develop a simple model where consequences of t…