PhilSci Archive

Two Notions of Naturalness

Williams, Porter (2018) Two Notions of Naturalness. [Preprint]

[img]
Preview
Text
two_notions_of_naturalness_fop_format.pdf

Download (433kB) | Preview

Abstract

My aim in this paper is twofold: (i) to distinguish two notions of naturalness employed in Beyond the Standard Model (BSM) physics and (ii) to argue that recognizing this distinction has methodological consequences. One notion of naturalness is an ``autonomy of scales'' requirement: it prohibits sensitive dependence of an effective field theory's low-energy observables on precise specification of the theory's description of cutoff-scale physics. I will argue that considerations from the general structure of effective field theory provide justification for the role this notion of naturalness has played in BSM model construction. A second, distinct notion construes naturalness as a statistical principle requiring that the values of the parameters in an effective field theory be ``likely'' given some appropriately chosen measure on some appropriately circumscribed space of models. I argue that these two notions are historically and conceptually related but are motivated by distinct theoretical considerations and admit of distinct kinds of solution.


Export/Citation: EndNote | BibTeX | Dublin Core | ASCII/Text Citation (Chicago) | HTML Citation | OpenURL
Social Networking:
Share |

Item Type: Preprint
Creators:
CreatorsEmailORCID
Williams, Porterporterwi@usc.edu0000-0003-0242-4045
Keywords: quantum field theory; effective field theory; Naturalness; particle physics; string theory; Beyond the Standard Model; multiverse; landscape
Subjects: Specific Sciences > Physics > Cosmology
Specific Sciences > Physics > Fields and Particles
Specific Sciences > Physics > Quantum Gravity
Specific Sciences > Probability/Statistics
Specific Sciences > Physics > Quantum Field Theory
Depositing User: Porter Williams
Date Deposited: 18 Nov 2018 05:04
Last Modified: 18 Nov 2018 05:04
Item ID: 15347
Subjects: Specific Sciences > Physics > Cosmology
Specific Sciences > Physics > Fields and Particles
Specific Sciences > Physics > Quantum Gravity
Specific Sciences > Probability/Statistics
Specific Sciences > Physics > Quantum Field Theory
Date: 14 November 2018
URI: https://philsci-archive-dev.library.pitt.edu/id/eprint/15347

Monthly Views for the past 3 years

Monthly Downloads for the past 3 years

Plum Analytics

Actions (login required)

View Item View Item