Experimental tests of pseudo-complex General Relativity

Schönenbach, Thomas; Caspar, Gunther; Hess, Peter O.; Böller, Thomas; Müller, Andreas; Schäfer, Mirko; Greiner, Walter

doi:10.1093/mnras/stt108

Cited by 36 publications

(52 citation statements)

References 30 publications

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“…Examples include ChernsSimons gravity [45,46], conformal gravity [47], pseudo-complex GR [48], the TensorVector-Scalar theory (TeVeS) that developed as a relativistic generalization of Modified Newtonian Dynamics or MOND [49], noncommutative spectral geometry [50], HoravaLifshitz gravity [51], and Extended Gravity, in which the action is allowed to depend on a general function of the Ricci scalar [52].…”

Section: The Standard Modelmentioning

confidence: 99%

Spacetime, spin and Gravity Probe B

Overduin

2015

Class. Quantum Grav.

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Abstract. It is more important than ever to push experimental tests of gravitational theory to the limits of existing technology in both range and sensitivity. This brief review focuses on spin-based tests of General Relativity and their implications for alternative, mostly non-metric theories of gravity motivated by the challenge of unification with the Standard Model of particle physics. The successful detection of geodetic precession and frame-dragging by Gravity Probe B places new constraints on a number of these theories, and increases our confidence in the theoretical mechanisms underpinning current ideas in astrophysics and cosmology.

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Section: The Standard Modelmentioning

confidence: 99%

Spacetime, spin and Gravity Probe B

Overduin

2015

Class. Quantum Grav.

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“…In collaboration with P. O. Hess from the National University of Mexico, he addressed again this problem in a series of articles [2][3][4][5] and demonstrated another tantalizing possibility, namely that mass might change the vacuum properties of the space nearby provoking the building up of dark energy, increasing toward smaller distances to the star. This is equivalent to a Casimir effect and the theory has a so-called pseudo-symplectic structure b , a notion treated in one of the contributions of the present proceedings.…”

Section: The Pseudo-complex General Relativity Theorymentioning

confidence: 99%

Walter Greiner: In Memoriam

Vasconcellos

Coelho

Hess

2017

Int. J. Mod. Phys. Conf. Ser.

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Walter Greiner (29 October 1935 - 6 October 2016) was a German theoretical physicist. His scientific research interests include the thematic areas of atomic physics, heavy ion physics, nuclear physics, elementary particle physics (particularly quantum electrodynamics and quantum chromodynamics). He is most known in Germany for his series of books in theoretical physics, but he is also well known around the world. Greiner was born on October 29, 1935, in Neuenbau, Sonnenberg, Germany. He studied physics at the University of Frankfurt (Goethe University in Frankfurt Am Main), receiving in this institution a BSci in physics and a Master’s degree in 1960 with a thesis on plasma-reactors, and a PhD in 1961 at the University of Freiburg under Hans Marshal, with a thesis on the nuclear polarization in [Formula: see text]-mesic atoms. During the period of 1962 to 1964 he was assistant professor at the University of Maryland, followed by a position as research associate at the University of Freiburg, in 1964. Starting in 1965, he became a full professor at the Institute for Theoretical Physics at Goethe University until 2003. Greiner has been a visiting professor to many universities and laboratories, including Florida State University, the University of Virginia, the University of California, the University of Melbourne, Vanderbilt University, Yale University, Oak Ridge National Laboratory and Los Alamos National Laboratory. In 2003, with Wolf Singer, he was the founding Director of the Frankfurt Institute for Advanced Studies (FIAS), and gave lectures and seminars in elementary particle physics. He died on October 6, 2016 at the age of 80. Walter Greiner was an excellent teacher, researcher, friend. And he was a great supporter of the series of events known by the acronyms IWARA - International Workshop on Astronomy and Relativistic Astrophysics, STARS - Caribbean Symposium on Cosmology, Gravitation, Nuclear and Astroparticle Physics, and SMFNS - International Symposium on Strong Electromagnetic Fields and Neutron Stars. Walter Greiner left us. But his memory will remain always alive among us who have had the privilege of knowing him and enjoy his wisdom and joy of living.

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“…In Schönenbach et al (2013), the circular orbits around the central rotating mass are investigated. The dependence of the orbital frequency on the metric is found to be ω ± = c −g 03 ± (g 03 ) 2 − g 00 g 33 g 33 .…”

Section: Features and Predictionsmentioning

confidence: 99%

“…In (Schönenbach et al 2013) also the red-shift was calculated as a function of the radial distance. The red shift is given by z = r 2 + a 2 cos 2 (ϑ)…”

Section: Features and Predictionsmentioning

confidence: 99%

“…As a result, the dark energy density falls off as 1/r 6 , apart from further lower order corrections. In Schönenbach et al (2013) different radial behaviors were investigated and shown that the main characteristics of the predicted observational data do not change much. In conclusion, the estimated functional dependence of the dark energy density outside the star does not suffer from basic problems.…”

Section: Neutron Starsmentioning

confidence: 99%

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Pseudo‐complex General Relativity and neutron stars

2014

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The pseudo-complex General Relativity, which includes a minimal length, is resumed and similarities to other theories are pointed out. For a zero minimal length the theory exhibits a remnant contribution, which is associated to a dark energy. It suggests the principle that a mass not only curves the space around it but also changes the vacuum properties, which in turn affect the metric. Some experimental predictions are shortly mentioned. The consequences of the presence of a dark energy are investigated for the case of neutron stars. It is shown that large masses of neutron stars are possible.

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Experimental tests of pseudo-complex General Relativity

Cited by 36 publications

References 30 publications

Spacetime, spin and Gravity Probe B

Spacetime, spin and Gravity Probe B

Walter Greiner: In Memoriam

Pseudo‐complex General Relativity and neutron stars

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