Closed strings and weak gravity from higher-spin causality

Kaplan, Jared; Kundu, Sandipan

doi:10.1007/jhep02(2021)145

Cited by 12 publications

(7 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the spinning WGC is satisfied (but not saturated), the angular momentum-to-mass ratio increases causing the gravitational force to become weaker than the centrifugal force. A similar condition for higher-spin states was studied in [20]. Second, corrections to the BTZ extremality bound also play an important role in determining the consistency of pure three-dimensional gravity.…”

Section: Jhep03(2021)085mentioning

confidence: 72%

A new spin on the Weak Gravity Conjecture

Aalsma

Cole

Loges

et al. 2021

J. High Energ. Phys.

View full text Add to dashboard Cite

The mild form of the Weak Gravity Conjecture states that quantum or higher-derivative corrections should decrease the mass of large extremal charged black holes at fixed charge. This allows extremal black holes to decay, unless protected by a symmetry (such as supersymmetry). We reformulate this conjecture as an integrated condition on the effective stress tensor capturing the effect of quantum or higher-derivative corrections. In addition to charged black holes, we also consider rotating BTZ black holes and show that this condition is satisfied as a consequence of the c-theorem, proving a spinning version of the Weak Gravity Conjecture. We also apply our results to a five-dimensional boosted black string with higher-derivative corrections. The boosted black string has a BTZ×S2 near-horizon geometry and, after Kaluza-Klein reduction, describes a four-dimensional charged black hole. Combining the spinning and charged Weak Gravity Conjecture we obtain positivity bounds on the five-dimensional Wilson coefficients that are stronger than those obtained from charged black holes alone.

show abstract

Section: Jhep03(2021)085mentioning

confidence: 72%

A new spin on the Weak Gravity Conjecture

Aalsma

Cole

Loges

et al. 2021

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

“…The first type of arguments, as explained in the introduction, lead to precise bounds, however, require some assumption about the Regge boundedness of the 4-point amplitude. Whereas, positivity of the eikonal phaseshift seems to be a more rigorous condition [99] 34 which leads to non-trivial constraints [38,65,66,99,[103][104][105][106][107][108], however, these constraints in some sense are parametric in nature.…”

Section: Conclusion and Commentsmentioning

confidence: 99%

Swampland Conditions for Higher Derivative Couplings from CFT

Kundu

2021

Preprint

Self Cite

View full text Add to dashboard Cite

There are effective field theories that cannot be embedded in any UV complete theory. We consider scalar effective field theories, with and without dynamical gravity, in D-dimensional anti-de Sitter (AdS) spacetime with large radius and derive precise bounds (analytically) on the coupling constants of higher derivative interactions φ 2 k φ 2 by only requiring that the dual CFT obeys the standard conformal bootstrap axioms. In particular, we show that all such coupling constants, for even k ≥ 2, must satisfy positivity, monotonicity, and log-convexity conditions in the absence of dynamical gravity. Inclusion of gravity only affects constraints involving the φ 2 2 φ 2 interaction which now can have a negative coupling constant. Our CFT setup is a Lorentzian four-point correlator in the Regge limit. We also utilize this setup to derive constraints on effective field theories of multiple scalars. We argue that similar analysis should impose nontrivial constraints on the graviton four-point scattering amplitude in AdS.

show abstract

“…Indeed, concrete frameworks like large N Yang-Mills or string theory lead to families or towers of states with varying spins. It would be interesting to study DM in higher-spin EFTs derived from realistic UV completions [19,54,55]. In all these investigations, we expect, the on-shell methods will play a crucial role, as they facilitate the calculations and provide better physical insight.…”

Section: Quantitative Resultsmentioning

confidence: 99%

On-shell effective theory for higher-spin dark matter

2021

View full text Add to dashboard Cite

We apply the on-shell amplitude techniques in the domain of dark matter. Without evoking fields and Lagrangians, an effective theory for a massive spin-S particle is defined in terms of on-shell amplitudes, which are written down using the massive spinor formalism. This procedure greatly simplifies the study of theories with a higher-spin dark matter particle. In particular, it provides an efficient way to calculate the rates of processes controlling dark matter production, and offers better physical insight into how different processes depend on the relevant scales in the theory. We demonstrate the applicability of these methods by exploring two scenarios where higher-spin DM is produced via the freeze-in mechanism. One scenario is minimal, involving only universal gravitational interactions, and is compatible with dark matter masses in a very broad range from sub-TeV to the GUT scale. The other scenario involves direct coupling of higher-spin DM to the Standard Model via the Higgs intermediary, and leads to a rich phenomenology, including dark matter decay signatures.

show abstract

Closed strings and weak gravity from higher-spin causality

Cited by 12 publications

References 65 publications

A new spin on the Weak Gravity Conjecture

A new spin on the Weak Gravity Conjecture

Swampland Conditions for Higher Derivative Couplings from CFT

On-shell effective theory for higher-spin dark matter

Contact Info

Product

Resources

About