The need to renormalize the cosmological constant
We consider the massless, minimally coupled scalar on de Sitter background. Although the 1-loop divergences of the graviton 1PI 2-point function are canceled by the usual Weyl (C2) and Eddington (R2) counterterms, there is still a finite, nonzero contribution to the graviton 1-point function. Unless...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-02-01
|
| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269324000315 |
| _version_ | 1797324423266566144 |
|---|---|
| author | N.C. Tsamis R.P. Woodard B. Yesilyurt |
| author_facet | N.C. Tsamis R.P. Woodard B. Yesilyurt |
| author_sort | N.C. Tsamis |
| collection | DOAJ |
| description | We consider the massless, minimally coupled scalar on de Sitter background. Although the 1-loop divergences of the graviton 1PI 2-point function are canceled by the usual Weyl (C2) and Eddington (R2) counterterms, there is still a finite, nonzero contribution to the graviton 1-point function. Unless this is canceled by a finite renormalization of the cosmological constant, the 1PI 2-point function will not be conserved, nor will the parameter “H” correspond to the actual Hubble constant. We argue that a similar finite renormalization of the cosmological constant is necessary in pure gravity, and that this must be done when solving the effective field equations for 1-loop corrections to the graviton wave function and to the force of gravity. |
| first_indexed | 2024-03-08T05:55:56Z |
| format | Article |
| id | doaj.art-b940c4f1cc914d24a36cab25402ae306 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-03-08T05:55:56Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-b940c4f1cc914d24a36cab25402ae3062024-02-05T04:30:43ZengElsevierPhysics Letters B0370-26932024-02-01849138472The need to renormalize the cosmological constantN.C. Tsamis0R.P. Woodard1B. Yesilyurt2Institute of Theoretical & Computational Physics, Department of Physics, University of Crete, GR-710 03 Heraklion, GreeceDepartment of Physics, University of Florida, Gainesville, FL 32611, United States; Corresponding author.Department of Physics, University of Florida, Gainesville, FL 32611, United StatesWe consider the massless, minimally coupled scalar on de Sitter background. Although the 1-loop divergences of the graviton 1PI 2-point function are canceled by the usual Weyl (C2) and Eddington (R2) counterterms, there is still a finite, nonzero contribution to the graviton 1-point function. Unless this is canceled by a finite renormalization of the cosmological constant, the 1PI 2-point function will not be conserved, nor will the parameter “H” correspond to the actual Hubble constant. We argue that a similar finite renormalization of the cosmological constant is necessary in pure gravity, and that this must be done when solving the effective field equations for 1-loop corrections to the graviton wave function and to the force of gravity.http://www.sciencedirect.com/science/article/pii/S0370269324000315 |
| spellingShingle | N.C. Tsamis R.P. Woodard B. Yesilyurt The need to renormalize the cosmological constant Physics Letters B |
| title | The need to renormalize the cosmological constant |
| title_full | The need to renormalize the cosmological constant |
| title_fullStr | The need to renormalize the cosmological constant |
| title_full_unstemmed | The need to renormalize the cosmological constant |
| title_short | The need to renormalize the cosmological constant |
| title_sort | need to renormalize the cosmological constant |
| url | http://www.sciencedirect.com/science/article/pii/S0370269324000315 |
| work_keys_str_mv | AT nctsamis theneedtorenormalizethecosmologicalconstant AT rpwoodard theneedtorenormalizethecosmologicalconstant AT byesilyurt theneedtorenormalizethecosmologicalconstant AT nctsamis needtorenormalizethecosmologicalconstant AT rpwoodard needtorenormalizethecosmologicalconstant AT byesilyurt needtorenormalizethecosmologicalconstant |