118 citations · 487 across the 21 of their papers we have counts for
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Equations of Motion as Covariant Gauss Law: The Maxwell-Chern-Simons Case
A. P. Balachandran, Arshad Momen, Amilcar R. de Queiroz
Time-independent gauge transformations are implemented in the canonical formalism by the Gauss law which is not covariant. The covariant form of Gauss law is conceptually important…
A Matrix Model for QCD
A. P. Balachandran, Sachindeo Vaidya, Amilcar R. de Queiroz
Gribov's observation that global gauge fixing is impossible has led to suggestions that there may be a deep connection between gauge-fixing and confinement. We find an unexpected r…
Entropy from Scaling Symmetry Breaking
Neymar Cavalcante, Saulo Diles, Kumar S. Gupta +1
The scaling symmetry in conformal quantum mechanics (CQM) can be broken due to the boundary conditions that follow from the requirement of a unitary time evolution of the Hamiltoni…
A Matrix Model for QCD: QCD Colour is Mixed
A. P. Balachandran, Amilcar de Queiroz, Sachindeo Vaidya
We use general arguments to show that coloured QCD states when restricted to gauge invariant local observables are mixed. This result has important implications for confinement: a…
Spontaneous Lorentz Violation: The Case of Infrared QED
A. P. Balachandran, S. Kurkcuoglu, A. R. de Queiroz +1
It is by now clear that infrared sector of QED has an intriguingly complex structure. Based on earlier pioneering works on this subject, two of us recently proposed a simple modifi…
Killing Horizons and Spinors
Bruno Carneiro da Cunha, Amilcar de Queiroz
We study the near horizon geometry of generic Killing horizons constructing suitable coordinates and taking the appropriate scaling limit. We are able to show that the geometry wil…
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…
Renormalization of Noncommutative Quantum Field Theories
Amilcar R. de Queiroz, Rahul Srivastava, Sachindeo Vaidya
We report on a comprehensive analysis of the renormalization of noncommutative ϕ^4 scalar field theories on the Groenewold-Moyal (GM) plane. These scalar field theories are twisted…
Electric Dipole Moment from QCD and How It Vanishes for Mixed States
A. P. Balachandran, T. R. Govindarajan, Amilcar R. de Queiroz
In a previous paper [1], we studied the mass and formulated its chirally symmetric coupling to fermions which induces electric dipole moment (EDM). Here we calculate the EDM t…
Quantum Gravity: Mixed States from Diffeomorphism Anomalies
A. P. Balachandran, Amilcar R. de Queiroz
In a previous paper, we discussed simple examples like particle on a circle and molecules to argue that mixed states can arise from anomalous symmetries. This idea was applied to t…
Mixed States from Anomalies
A. P. Balachandran, Amilcar R. de Queiroz
There are several instances where quantum anomalies of continuous and discrete classical symmetries play an important role in fundamental physics. Examples come from chiral anomali…
Lehmann-Symanzik-Zimmermann S-Matrix elements on the Moyal Plane
A. P. Balachandran, Pramod Padmanabhan, Amilcar R. de Queiroz
Field theories on the Groenewold-Moyal(GM) plane are studied using the Lehmann-Symanzik-Zimmermann(LSZ) formalism. The example of real scalar fields is treated in detail. The S-mat…
Kerr-CFT From Black-Hole Thermodynamics
Bruno Carneiro da Cunha, Amilcar R. de Queiroz
We analyze the near-horizon limit of a general black hole with two commuting killing vector fields in the limit of zero temperature. We use black hole thermodynamics methods to rel…