Zobrazeno 1 - 10
of 139
pro vyhledávání: '"Mezincescu, Luca"'
Using Hamiltonian methods, we find six relativistic theories of nonlinear electrodynamics for which plane wave perturbations about a constant uniform background are not birefringent. All have the same conformal strong-field limit to Bialynicki-Birula
Externí odkaz:
http://arxiv.org/abs/2311.04278
Autor:
Mezincescu, Luca, Townsend, Paul K.
In the Hamiltonian formulation of chiral 2k-form electrodynamics, the 2k-form potential on the (4k+1)-space is defined up to the addition of either (i) a closed $2k$-form or (ii) an exact 2k-form, depending on the choice of chirality constraint. Case
Externí odkaz:
http://arxiv.org/abs/2204.09336
Autor:
Ivanov, Evgeny, Mezincescu, Luca
Publikováno v:
JHEP 2101 (2021) 081
We analyze the global symmetries of ${\cal N}=4$ supersymmetric mechanics involving $4n$-dimensional Quaternion-K\"ahler (QK) $1D$ sigma models on projective spaces $\mathbb{H}{\rm H}^n$ and $\mathbb{H}{\rm P}^n$ as the bosonic core. All Noether char
Externí odkaz:
http://arxiv.org/abs/2007.12985
Autor:
Mezincescu, Luca, Townsend, Paul K.
The IR limit of a planar static D3-brane in AdS5 x S5 is a tensionless D3-brane at the AdS horizon, with dynamics governed by a strong-field limit of the Dirac-Born-Infeld action analogous to that found from the Born-Infeld action by Bialynicki-Birul
Externí odkaz:
http://arxiv.org/abs/1907.06036
Autor:
Ivanov, Evgeny, Mezincescu, Luca
Publikováno v:
JHEP {\bf 1712}, 016 (2017)
Using the N=4, 1D harmonic superspace approach, we construct a new type of N=4 supersymmetric mechanics involving 4n-dimensional Quaternion-K\"ahler (QK) 1D sigma models as the bosonic core. The basic ingredients of our construction are {\it local} N
Externí odkaz:
http://arxiv.org/abs/1709.02286
The Souriau massless Galilean particle of "colour" $k$ and spin $s$ is shown to be the Galilean limit of the Souriau tachyon of mass $m = ik$ and spin $s$. We compare and contrast this result with the recent Galilean limit of the Nambu-Goto string an
Externí odkaz:
http://arxiv.org/abs/1702.04792
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The action for a massless particle in 4D Minkowski space has a worldline time-reversing symmetry corresponding to CPT invariance of the quantum theory. The analogous symmetry of the N-extended superparticle is shown to be anomalous when N is odd, in
Externí odkaz:
http://arxiv.org/abs/1607.00526
We present a novel construction of the super-Pauli-Lubanski pseudo-vector for 4D supersymmetry and show how it arises naturally from the spin-shell constraints in the supertwistor formulation of superparticle dynamics. We illustrate this result in th
Externí odkaz:
http://arxiv.org/abs/1601.05294
Gauge-invariant twistor variables are found for the massive spinning particle with N-extended local worldline supersymmetry, in spacetime dimensions D=3,4,6. The twistor action is manifestly Lorentz invariant but the anticommuting spin variables appe
Externí odkaz:
http://arxiv.org/abs/1508.05350