ID: 1711.06085

Gravity Induced Non-Local Effects in the Standard Model

November 16, 2017

View on ArXiv
S. O. Alexeyev, X. Calmet, B. N. Latosh
High Energy Physics - Theory

We show that the non-locality recently identified in quantum gravity using resummation techniques propagates to the matter sector of the theory. We describe these non-local effects using effective field theory techniques. We derive the complete set of non-local effective operators at order $N G^2$ for theories involving scalar, spinor, and vector fields. We then use recent data from the Large Hadron Collider to set a bound on the scale of space-time non-locality and find $M_\star> 3 \times 10^{-11}$ GeV.

Similar papers 1

Nonlocality in Quantum Gravity and the Breakdown of Effective Field Theory

May 25, 2021

87% Match
Nicolás Valdés-Meller
High Energy Physics - Theory
General Relativity and Quant...

We argue that quantum gravity is nonlocal, first by recalling well-known arguments that support this idea and then by focusing on a point not usually emphasized: that making a conventional effective field theory (EFT) for quantum gravity is particularly difficult, and perhaps impossible in principle. This inability to realize an EFT comes down to the fact that gravity itself sets length scales for a problem: when integrating out degrees of freedom above some cutoff, the effec...

Find SimilarView on arXiv

Effects of Non-locality in Gravity and Quantum Theory

September 23, 2020

86% Match
Jens Boos
General Relativity and Quant...
High Energy Physics - Phenom...
High Energy Physics - Theory
Quantum Physics

Spacetime---the union of space and time---is both the actor and the stage during physical processes in our fascinating Universe. In Lorentz invariant local theories, the existence of a maximum signalling speed (the "speed of light") determines a notion of causality in spacetime, distinguishing the past from the future, and the cause from the effect. This thesis is dedicated to the study of \emph{deviations} from locality. Focussing on a particular class of \emph{non-local} th...

Find SimilarView on arXiv

Non-locality in Quantum Field Theory due to General Relativity

May 18, 2015

86% Match
Xavier Calmet, Djuna Croon, Christopher Fritz
Cosmology and Nongalactic As...

We show that General Relativity coupled to a quantum field theory generically leads to non-local effects in the matter sector. These non-local effects can be described by non-local higher dimensional operators which remarkably have an approximate shift symmetry. When applied to inflationary models, our results imply that small non-Gaussianities are a generic feature of models based on General Relativity coupled to matter fields. However, these effects are too small to be obse...

Find SimilarView on arXiv

Nonlocal Spacetime-Matter

March 8, 2021

86% Match
Leonardo Modesto
General Relativity and Quant...
High Energy Physics - Phenom...
High Energy Physics - Theory

We propose a nonlocal field theory for gravity in presence of matter consistent with perturbative unitarity, quantum finiteness, and other essential classical properties that we are going to list below. First, the theory exactly reproduces the same tree-level scattering amplitudes of Einstein's gravity coupled to matter insuring no violation of macro-causality. Second, all the exact solutions of the Einstein's theory are also exact solutions of the nonlocal theory. Finally, a...

Find SimilarView on arXiv

Towards LHC Physics with Non-local Standard Model

July 12, 2014

86% Match
Tirthabir Biswas, Nobuchika Okada
High Energy Physics - Phenom...
General Relativity and Quant...
High Energy Physics - Theory

We take a few steps towards constructing a string-inspired nonlocal extension of the Standard Model. We start by illustrating how quantum loop calculations can be performed in nonlocal scalar field theory. In particular, we show the potential to address the hierarchy problem in the nonlocal framework. Next, we construct a nonlocal abelian gauge model and derive modifications of the gauge interaction vertex and field propagators. We apply the modifications to a toy version of ...

Find SimilarView on arXiv

Quantum Loops in Non-Local Gravity

August 29, 2015

86% Match
Spyridon Talaganis
Cosmology and Nongalactic As...

In this proceedings, I will consider quantum aspects of a non-local, infinite-derivative scalar field theory - a ${\it toy \, model}$ depiction of a covariant infinite-derivative, non-local extension of Einstein's general relativity which has previously been shown to be free from ghosts around the Minkowski background. The graviton propagator in this theory gets an exponential suppression making it ${\it asymptotically \, free}$, thus providing strong prospects of resolving v...

Find SimilarView on arXiv

Nonlocal Infrared Modifications of Gravity. A Review

June 28, 2016

86% Match
Michele Maggiore
High Energy Physics - Theory
General Relativity and Quant...

We review an approach developed in the last few years by our group in which GR is modified in the infrared, at an effective level, by nonlocal terms associated to a mass scale. We begin by recalling the notion of quantum effective action and its associated nonlocalities, illustrating some of their features with the anomaly-induced effective actions in $D=2$ and $D=4$. We examine conceptual issues of nonlocal theories such as causality, degrees of freedoms and ghosts, stressin...

Find SimilarView on arXiv

Gravity and Effective Field Theory: A Talk for Phenomenologists

December 12, 1995

85% Match
John F. Univ. of Massachusetts, Amherst Donoghue
High Energy Physics - Phenom...

I briefly summarized some recent work which uses the techniques of effective field theory to make quantum predictions in general relativity. In contrast to conventional expectations, these are in fact well behaved. The leading quantum correction to the interaction of two heavy masses is used as a specific example.

Find SimilarView on arXiv

General relativity as an effective field theory: The leading quantum corrections

May 25, 1994

85% Match
John F. Donoghue
General Relativity and Quant...
High Energy Physics - Phenom...
High Energy Physics - Theory

I describe the treatment of gravity as a quantum effective field theory. This allows a natural separation of the (known) low energy quantum effects from the (unknown) high energy contributions. Within this framework, gravity is a well behaved quantum field theory at ordinary energies. In studying the class of quantum corrections at low energy, the dominant effects at large distance can be isolated, as these are due to the propagation of the massless particles (including gravi...

Find SimilarView on arXiv

APPLICATIONS OF EFFECTIVE LAGRANGIANS

March 24, 1995

84% Match
Jose some macros left out are included, this should LateX properly Wudka
High Energy Physics - Phenom...

The applications of effective lagrangians to the determination of the effects of physics beyond the Standard Model are briefly described. Emphasis is given to those effective operators which generate the largest deviations form the Standard Model; some applications are described. of the paper (or other short description) [Talk given at "Beyond the Standard Model IV", Lake Tahoe, CA, Dec. 13-18, 1994]

Find SimilarView on arXiv