38 citations · 317 across the 30 of their papers we have counts for
31 papers
Induced Couplings and Causal Bounds from Nondegenerate Dirac Lagrangians
Marcelo Netz-Marzola, David Vasak, Vladimir Denk +2
The standard Dirac Lagrangian is linear in the field derivatives and therefore has a vanishing Hessian. We identify the minimal null deformations of this Lagrangian that make the c…
Tidal Forces in the Presence of Torsion and Nonmetricity
Armin van de Venn, Marcelo Netz-Marzola, David Vasak +1
This work investigates how torsion and nonmetricity modify tidal accelerations in metric-affine gravity. We derive a projected deviation equation that generalizes the standard geod…
On measuring the Quantum Universe
David Vasak, Johannes Kirsch, Juergen Struckmeier
We present a theoretical analysis of the WDW approach to quantum cosmology extended to gravity theories with torsion. The dynamics of the FLRW universe is formulated as a classical…
Setting free the cosmic time in Quantum Universe
David Vasak
The standard Wheeler-DeWitt approach to Quantum Cosmology leads to the problematic freeze of time. The reason is the enforcement of time re-parametrization invariance via the lapse…
Toward Singularity Theorems with Torsion
Armin van de Venn, Ujjwal Agarwal, David Vasak
This study examines the formulation of a singularity theorem for timelike curves including torsion, and establishes the foundational framework necessary for its derivation. We begi…
Bounding the Cosmological Constant using Galactic Rotation Curves from the SPARC Dataset
David Benisty, David Vasak, Jürgen Struckmeier +1
Dark energy (and its simplest model, the Cosmological Constant or ) acts as a repulsive force that opposes gravitational attraction. Assuming galaxies maintain a steady state ov…
Massive propagating modes of torsion
Vladimir Denk, David Vasak, Johannes Kirsch
The dynamics of the torsion field is analyzed in the framework of the Covariant Canonical Gauge Theory of Gravity (CCGG), a De~Donder-Weyl Hamiltonian formulation of gauge gravity.…
On CCGG, the De Donder-Weyl Hamiltonian formulation of canonical gauge gravity
D. Vasak, J. Kirsch, A. van de Venn +2
This paper gives a brief overview of the manifestly covariant canonical gauge gravity (CCGG) that is rooted in the De Donder-Weyl Hamiltonian formulation of relativistic field theo…
Covariant Canonical Gauge Theory of Classical Gravitation for Scalar, Vector, and Spin-1/2 Particle Fields
David Vasak, Jürgen Struckmeier
The framework of the Covariant Canonical Gauge theory of Gravity (CCGG) is described in detail. CCGG emerges naturally in the Palatini formulation, where the vierbein and the spin…
Torsion driving cosmic expansion
Johannes Kirsch, David Vasak, Armin van de Venn +1
We study a cosmological model based on the canonical Hamiltonian transformation theory. Using a linear-quadratic approach for the free gravitational De Donder-Weyl Hamiltonian $H_\…
Torsional dark energy in quadratic gauge gravity
Armin van de Venn, David Vasak, Johannes Kirsch +1
The Covariant Canonical Gauge theory of Gravity (CCGG) is a gauge field formulation of gravity which a priori includes non-metricity and torsion. It extends the Lagrangian of Einst…
On the cosmological constant in the deformed Einstein-Cartan gauge gravity in De Donder-Weyl Hamiltonian formulation
D. Vasak, J. Kirsch, J. Struckmeier +1
A modification of the Einstein-Hilbert theory, the Covariant Canonical Gauge Gravity (CCGG), leads to a cosmological constant that represents the energy of the space-time continuum…
The dark side of the torsion: Dark Energy from propagating torsion
David Benisty, Eduardo I. Guendelman, Armin van de Venn +3
An extension to the Einstein-Cartan (EC) action is discussed in terms of cosmological solutions. The torsion incorporated in the EC Lagrangian is assumed to be totally anti-symmetr…
Identity for scalar-valued functions of tensors and its applications to energy-momentum tensors in classical field theories and gravity
J. Struckmeier, A. van de Venn, D. Vasak
We prove a theorem on scalar-valued functions of tensors, where ``scalar'' refers to absolute scalars as well as relative scalars of weight . The present work thereby generalize…
Low-Redshift Constraints on Covariant Canonical Gauge Theory of Gravity
David Benisty, David Vasak, Johannes Kirsch +1
Constraints on the Covariant Canonical Gauge Gravity (CCGG) theory from low-redshift cosmology are studied. The formulation extends Einstein's theory of General Relativity (GR) by…
Covariant canonical gauge theory of gravitation for fermions
Jürgen Struckmeier, David Vasak
We derive the interaction of fermions with a dynamical space-time based on the postulate that the description of physics should be independent of the reference frame, which means t…
Rigorous derivation of dark energy and inflation as geometry effects in Covariant Canonical Gauge Gravity
David Vasak, Johannes Kirsch, Jürgen Struckmeier
The cosmological implications of the Covariant Canonical Gauge Theory of Gravity (CCGG) are investigated. CCGG is a Palatini theory derived from first principles using the canonica…
Vanishing torsion coupling of the Maxwell field in canonical gauge theory of gravity
Johannes Münch, Jürgen Struckmeier, David Vasak
The Maxwell field can be viewed as a -gauge theory, therefore, generalizing it to form-invariance in dynamical spacetime backgrounds should take this symmetry into account. T…
Dark energy and inflation invoked in CCGG by locally contorted space-time
David Vasak, Johannes Kirsch, Juergen Struckmeier
The cosmological implications of the Covariant Canonical Gauge Theory of Gravity (CCGG) are investigated. We deduce that, in a metric compatible geometry, the requirement of covari…
Covariant Canonical Quantization
P. Liebrich
A formulation of Covariant Canonical Quantization is discussed, which works on an extended Hilbert space and reduces to conventional canonical quantization when constraining to the…
Inflation from fermions with curvature-dependent mass
David Benisty, Eduardo I. Guendelman, Emmanuel N. Saridakis +3
A model of inflation realization driven by fermions with curvature-dependent mass is studied. Such a term is derived from the Covariant Canonical Gauge Theory of gravity (CCGG) inc…
Covariant Canonical Gauge Gravitation and Cosmology
David Vasak, Johannes Kirsch, Dirk Kehm +1
The covariant canonical transformation theory applied to the relativistic Hamiltonian theory of classical matter fields in dynamical space-time yields a novel (first order) gauge f…
Quadratic curvature theories formulated as Covariant Canonical Gauge theories of Gravity
David Benisty, Eduardo I. Guendelman, David Vasak +2
The Covariant Canonical Gauge theory of Gravity is generalized by including at the Lagrangian level all possible quadratic curvature invariants. In this approach, the covariant Ham…
Energy transfer from space-time into matter and a bouncing inflation from Covariant Canonical Gauge theory of Gravity
David Benisty, David Vasak, Eduardo Guendelman +1
Cosmological solutions for covariant canonical gauge theories of gravity are presented. The underlying covariant canonical transformation framework invokes a dynamical space-time H…