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Toward a Proof of Montonen-Olive Duality via Multiple M2-branes Koji Hashimoto (RIKEN) 25th Sep 2008 @KIAS conference “Recent Developments in String/M Theory” arXiv/0809.2137(hep-th) w/ T.S.Tai, S.Terashima

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1.Why BLG/ABJM ?

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Use of ABJM? Forget importance of M-theory. Is BLG / ABJM useful for any other purpose? Ans: Surely it is very useful, for non-Abelian duliaty Let’s remind Abelian duality for elemag system 3 dimensions: Scalar – vector duality Integration of 4 dimensions: Elemag duality Integration of

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Non-Abelianization? Q : Can we non-Abelianize these “classical” dualities? 3 dimensions : Yes Nonabelian Scalar-Chern-Simons 3d YM [Mukhi-Papageorgakis] [Distler-Mukhi-Papageorgakis-VanRaamsdonk] 4 dimensions : Montonen-Olive duality Renowned conjecture, no proof yet…. Real help of string/M theory for field theory duality ! Our target : Proof of MO duality via ABJM

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Montonen-Olive duality conjecture 4d U(N) super Yang-Mills has a non-local symmetry of the theory, Proof wanted !!!

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Non-Abelian dualities String/M-theory M-theory S 1 w/ IIA string w/ IIA string on S 1 S 1 w/ T-dual IIB string on S 1 S 1 w/ IIB string w/ M IIA relations : M IIB relations : M2D2 D3 M2 D2 : Scalar-Vector duality D3 D3 : MO duality = “9-11 flip” in M-theory Decompactified IIB = M on shrinking torus

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Strategy for a field theory proof of MO ABJM = theory of multiple M2-branes Realize a torus compactification of transverse space for ABJM Shrinking torus limit 4d YM = = MO duality Question 1 : Torus in ABJM ? Question 2 : Choice of the torus cycles ? Ans : Quiver generalization of ABJM + 2 vevs Ans : Different pairings of CS gauge fields Sec.3 Sec.4 “9-11 flip” = =...

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Plan 1. Why BLG/ABJM? 2. M2 D2 : Review 3. M2 D3 4. MO duality 3 slides 6 slides 3 slides 4 slides

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2. M2 D2 : Review [Mukhi-Papageorgakis] [Distler-Mukhi-Papageorgakis-VanRaamsdonk]

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ABJM theory [Aharony,Bergman,Jafferis,Maldacena] U(N) x U(N) ABJM theory = N M2s on C 4 / Z k U(1) gauge transf. Boundary term remains, devides the C 4 Moduli space : C 4 / Z k

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ABJM and circle compactification [Distler-Mukhi-Papageorgakis-VanRaamsdonk] Orbifold C 4 / Z k M2 : fixed M2 S 1 compactification Quiver diagram of ABJM Linear combination : Vev gives the mass term for

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ABJM 3d YM [Mukhi-Papageorgakis] [Distler-Mukhi-Papageorgakis-VanRaamsdonk] CS kinetic term is written as The massive is an auxiliary field, integrated out 3d YM : fixed ABJM in the limit = D2 action (3d U(N) YM) Scalar kinetic term for dissapears.

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3. M2 D3

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Another circle ? We need a torus …… Another orbifold is necessary Orbifolded U(N) n x U(N) n ABJM ABJM Douglas-Moore [Bena,Klebanov,Klose,Smedback] [Terashima,Yagi] [Imamura,Kimura] [Hosomichi, Lee 3,Park]

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Torus compactification Moduli space : [Terashima,Yagi] [Imamura,Kimura] It’s already a double orbifold, so we take Turn on two vevs : M2 on a shrinking torus

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2 steps for getting 4d YM Orbifolded ABJM Infinite # of 3d massive YMs 4d YM (i)(ii) Introduce two scalar vevs Integrate out Make a linear combination Think of them as KK modes of a 4d YM Diagonalize gauge fields

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1st step For simplicity in this talk I will explain the case Linear combination : 123 2n Integrating out the auxiliary fields

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2nd step Diagonalize. In the limit, KK radius equivalent 4d YM

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Final 4d action Theta term appears. For generic, cross terms remain theta “3d 4d” is …. Deconstruction. Taylor’s T-duality. [Arkani-Hamed,Cohen,Georgi] [Hill,Pokorski,Wang] [Taylor] We obtain 4d YM action from the orbifolded ABJM,

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4. MO duality

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Choice of the combination 123 2n 123 123 Prime case Second case Third case

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Emergence of SL(2,Z) These couplings are related by SL(2,Z) transformation! Generators : Prime Second Prime Third SL(2,Z) transformation Choice of combination of CS gauge fields =

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MO duality proven ? We find Our S transf. = Parity transf. Is this a proof of MO duality ?!?! Not really….. Identified Our coupling is a one-parameter family

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5. Summary

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Summary : importance Torus compactification of M2 transverse space is realized. Orbifolded ABJM + 2 vevs, with a new scaling limit Infinitely many 4d YM are derived. New geometric interpretation of quiver diagrams 4d YM on N D3s is derived from 3d ABJM. Deconstruction (T-duality) with theta term Montonen-Olive duality is proven? No. Our S is a parity, due to our special values of. However, field theory realization of T transf. is nontrivial We got half the way to the goal.

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M-theory interpretation 2 vevs 2 1-cycles specified by vectors Torus modurus Due to M-IIB duality, this should become axio-dilaton. Our field theory result is identical with this

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Discussions Toward a Proof ? Different quivers necessary? Other vevs don’t help for our quiver….. IIB physics M physics? Interpolation of AdS 5 AdS 4 ?

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