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Deconstructing the string landscape

Objective

Despite its uniqueness, string theory has a “landscape” of low-energy solutions with very different observable physics. These solutions are usually found using low-energy effective theories which, in order to satisfy all the experimental constraints, require a number of exotic ingredients whose string theory origin is unclear. Thus, finding a solution within the effective theory compatible with experiments is far from the same as showing that such a solution is stable in string theory, to say nothing of whether it even exist. Without a string realization, there is neither a known ultraviolet completion of the effective action, nor any guarantee of its existence or consistency. The primary objective of this proposal is to deconstruct the string theory landscape, and determine what parts of it can be promoted to full-fledged string theory solutions, thus resolving the question of their consistency, and what parts are inconsistent. If the outcome of the project is that most of the phenomenologically interesting models are consistent, the landscape paradigm will be put on solid ground. Proving that most models are inconsistent would shatter it, weakening the case for a multiverse explanation of our universe, while restoring the quest for predictability in string theory. The most drastic possible outcome would be to show that none of the existing models survive consistency checks. Such a verdict would force us to search for more inventive alternatives, such as going away from the realm of geometry, and so this project will also pioneer the construction of a “non-geometric landscape”.

Fields of science (EuroSciVoc)

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Keywords

Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)

Programme(s)

Multi-annual funding programmes that define the EU’s priorities for research and innovation.

Topic(s)

Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.

Funding Scheme

Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.

ERC-COG - Consolidator Grant

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Call for proposal

Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

(opens in new window) ERC-2017-COG

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Host institution

COMMISSARIAT A L ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 1 669 465,00
Address
RUE LEBLANC 25
75015 Paris
France

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Region
Ile-de-France Ile-de-France Paris
Activity type
Research Organisations
Links
Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 1 669 465,00

Beneficiaries (1)

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