6,106 research outputs found
The Yang-Mills vacuum in Coulomb gauge
The Yang-Mills Schr\"odinger equation is solved in Coulomb gauge for the
vacuum by the variational principle using an ansatz for the wave functional,
which is strongly peaked at the Gribov horizon. We find an infrared suppressed
gluon propagator, an infrared singular ghost propagator and an almost linearly
rising confinement potential. Using these solutions we calculate the electric
field of static color charge distributions relevant for mesons and baryons.Comment: 4 pages, 5 figures, Proceedings ``Confinement Conference Sardinia
2004'
Hamiltonian approach to Yang-Mills theory in Coulomb gauge
Recent results obtained within the Hamiltonian approach to continuum
Yang-Mills theory in Coulomb gauge are reviewed.Comment: 7 pages, 2 figures, to appear in the ``Quark Confinement and the
hadron spectrum VII'' (Portugal 2006) conference proceeding
Heat-kernel expansion and counterterms of the Faddeev-Popov determinant in Coulomb and Landau gauge
The Faddeev-Popov determinant of Landau gauge in d dimensions and Coulomb
gauge in d+1 dimensions is calculated in the heat-kernel expansion up to
next-to-leading order. The UV-divergent parts in d=3,4 are isolated and the
counterterms required for a non-perturbative treatment of the Faddeev-Popov
determinant are determined.Comment: 7 page
PROSTHETIC SURFACE – DESIGN MODELS FOR A DYNAMIC ARCHITECTURE
The research investigates strategies of dynamic surface formations in a transfer from sartorial
fashion to architecture. ‘Remote Control Dress’ (Hussein Chalayan), ‘Dress becomes Body (Rei
Kawakubo) and ‘A-Poc’ (Issey Miyake) are precedents of specific technologies and techniques
that produce responsive, performative, or phenomenal dresses. These garments can deliver
generative surface methods for an architecture operated through the user. The research frames
key parameters (cutting scheme, constructive line, programmatic insertions, and operative field)
and their respective characteristics and interrelations in analysis. Thus, principles are derived
and channeled into performative design models in a media rotation with a conversion between
digital and analogue modeling. The paper discusses the potential of these dynamic design
models in a design process that addresses the change capacities of architecture in a shifting
cultural and programmatic context
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