Fakeons, Microcausality And The Classical Limit Of Quantum Gravity

Anselmi, Damiano

doi:10.1088/1361-6382/ab04c8

Fakeons, Microcausality And The Classical Limit Of Quantum Gravity

Damiano Anselmi
(
- INFN, Pisa and
- Pisa U.
)

Sep 13, 2018

27 pages

Published in:

Class.Quant.Grav. 36 (2019) 065010

e-Print:

1809.05037 [hep-th]

DOI:

10.1088/1361-6382/ab04c8 (publication)

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Abstract: (IOP)

We elaborate on the idea of fake particle and study its physical consequences. When a theory contains fakeons, the true classical limit is determined by the quantization and a subsequent process of 'classicization'. One of the major predictions due to the fake particles is the violation of microcausality, which survives the classical limit. This fact gives hope to detect the violation experimentally. A fakeon of spin two, together with a scalar field, is able to make quantum gravity renormalizable while preserving unitarity. We claim that the theory of quantum gravity emerging from this construction is the right one. By means of the classicization, we work out the corrections to the field equations of general relativity. We show that the finalized equations have, in simple terms, the form , where is an average that includes a little bit of 'future'.

Note:

27 pages, 4 figures; v2: expanded intro and bibliography, Class. Q. Grav

approximation: classical
spin: 2
scale: Planck
quantum gravity
general relativity
field equations
quantization

References(39)

Figures(4)

[1]

On the quantum field theory of the gravitational interactions

Damiano Anselmi
(
- INFN, Pisa and
- Pisa U.
)

- JHEP 06 (2017) 086
•
e-Print:
- 1704.07728
•
DOI:
- 10.1007/JHEP06(2017)086

[2]

Quantum Gravity, Fakeons And Microcausality

Damiano Anselmi
(
- Pisa U. and
- INFN, Pisa
)
,
Marco Piva
(
- Pisa U. and
- INFN, Pisa
)

- JHEP 11 (2018) 021
•
e-Print:
- 1806.03605
•
DOI:
- 10.1007/JHEP11(2018)021

[3]

Renormalization of Higher Derivative Quantum Gravity

K.S. Stelle
(
- Brandeis U.
)

- Phys.Rev.D 16 (1977) 953-969
•
DOI:
- 10.1103/PhysRevD.16.953

[3]

ASYMPTOTIC FREEDOM IN HIGHER DERIVATIVE QUANTUM GRAVITY

- Phys.Lett.B 159 (1985) 269-274
•
DOI:
- 10.1016/0370-2693(85)90248-5

[3]

Gauges and functional measures in quantum gravity II: Higher derivative gravity

N. Ohta
(
- Kinki U., Osaka
)
,
R. Percacci
(
- INFN, Trieste and
- SISSA, Trieste
)
,
A.D. Pereira
(
- Rio de Janeiro State U.
)

- Eur.Phys.J.C 77 (2017) 9, 611
•
e-Print:
- 1610.07991
•
DOI:
- 10.1140/epjc/s10052-017-5176-z

[3]

Agravity

Alberto Salvio
(
- Madrid, IFT and
- Madrid, Autonoma U.
)
,
Alessandro Strumia
(
- NICPB, Tallinn and
- INFN, Pisa and
- Pisa U.
)

- JHEP 06 (2014) 080
•
e-Print:
- 1403.4226
•
DOI:
- 10.1007/JHEP06(2014)080

[3]

Agravity up to infinite energy

Alberto Salvio
(
- CERN
)
,
Alessandro Strumia
(
- CERN and
- INFN, Pisa and
- Pisa U.
)

- Eur.Phys.J.C 78 (2018) 2, 124
•
e-Print:
- 1705.03896
•
DOI:
- 10.1140/epjc/s10052-018-5588-4

[4]

Superstring Theory I / & II, Cambridge University Press

M.B. Green
,
J.H. Schwarz
,
E. Witten

[4]

String Theory I / & II, Cambridge University Press

J. Polchinski

[4]

String theory and M-theory: A modern introduction

K. Becker
,
M. Becker
,
J. Schwarz

[4]

Basic Concepts of String Theory / Verlag

R. Blumenhagen
,
D. Lust
,
S. Theisen

[5]

: 100 years of relativity. Space-time structure: Einstein and beyond

A. Ashtekar

[5]

Quantum Gravity, Cambridge University Press

C. Rovelli

[5]

General relativity

T. Thiemann

[6]

The Large $N$ limit of superconformal field theories and supergravity

Juan Martin Maldacena
(
- Harvard U.
)

- Int.J.Theor.Phys. 38 (1999) 1113-1133 (reprint),
- Adv.Theor.Math.Phys. 2 (1998) 231-252
•
e-Print:
- hep-th/9711200
•
DOI:
- 10.4310/ATMP.1998.v2.n2.a1

[6]

Gauge theory correlators from noncritical string theory

S.S. Gubser
(
- Princeton U.
)
,
Igor R. Klebanov
(
- Princeton U.
)
,
Alexander M. Polyakov
(
- Princeton U.
)

- Phys.Lett.B 428 (1998) 105-114
•
e-Print:
- hep-th/9802109
•
DOI:
- 10.1016/S0370-2693(98)00377-3

[6]

Anti de Sitter space and holography

Edward Witten
(
- Princeton, Inst. Advanced Study
)

- Adv.Theor.Math.Phys. 2 (1998) 253-291
•
e-Print:
- hep-th/9802150
•
DOI:
- 10.4310/ATMP.1998.v2.n2.a2

[6]

The AdS/CFT Correspondence

Veronika E. Hubeny
(
- Durham U., CPT and
- Durham U., Dept. of Math.
)

- Class.Quant.Grav. 32 (2015) 12, 124010
•
e-Print:
- 1501.00007
•
DOI:
- 10.1088/0264-9381/32/12/124010

[7]

Quantum Gravity on the Lattice

Herbert W. Hamber
(
- UC, Irvine
)

- Gen.Rel.Grav. 41 (2009) 817-876
•
e-Print:
- 0901.0964
•
DOI:
- 10.1007/s10714-009-0769-y

[8]

Ultraviolet divergences in quantum theories of gravitation, in An Einstein centenary survey, S. Hawking and W. Israel (eds.) / Cambridge University Press, Cambridge, p. 790