Oliver Schlotterer

Oliver Schlotterer phone: +46(0)18 471 xxxx 
RESEARCH Interests
My research is centered on the rich interplay between string theories, unifying structures in perturbative field theories and modern topics in number theory. More specifically, I am studying scattering amplitudes in string and field theories as a smoking gun for striking connections between gauge theories, gravity and effective field theories. This includes interdisciplinary research on the intriguing mathematical structures of multiple zeta values, polylogarithms and their generalizations to higher genus which arise in both string amplitudes and Feynman integrals. My work has pinpointed stringtheory origins of doublecopy structures in perturbative gravity, a variety of surprising fieldtheory structures in string amplitudes and the first instances of elliptic multiple zeta values in physics.
ERCStG project UNISCAMP – The unity of scattering amplitudes: gauge theory, gravity, strings and number theory
Scattering amplitudes are central observables in quantum field theory and provide essential information about the quantum consistency of perturbative gravity. Precise control of the physical and mathematical properties of scattering amplitudes holds the key to longstanding questions on fundamental interactions and the structure of space and time. As a concrete leap in this direction, UNISCAMP addresses predictions in gauge theories, gravity and effective theories through
 the efficient computation and compact representation of scattering amplitudes and,
 decoding their hidden structures & symmetries and their rich web of connections.
Stringtheory methods will complement conventional approaches to scattering amplitudes, and UNISCAMP will combine the insights from
 the pointparticle limit of superstrings & heterotic strings and,
 the recent ambitwistor strings which directly compute fieldtheory amplitudes.
Both of them naturally incorporate the doublecopy relation between gaugetheory & gravity amplitudes and extend the framework to effective field theories describing pions and other lowenergy states. It is a primary goal of UNISCAMP to pinpoint the unifying principles connecting a wide range of field and string theories.
Moreover, field and stringtheory amplitudes exhibit an intriguing mathematical structure: Their Feynman and modulispace integrals yield special functions such as polylogarithms which became a vibrant common theme of highenergy physics and number theory. An interdisciplinary goal of UNISCAMP is to
 investigate the lowenergy expansion of multiloop string amplitudes and,
 extract an organizing scheme for iterated integrals on highergenus Riemann surfaces.
Review material that you cannot find on the arXiv
 The number theory of string amplitudes (draft version of a proceedings article for the conference “Numbers and Physics”, ICMAT, Madrid, Spain, September 2014)
 Oneloop string scattering amplitudes as iterated Eisenstein integrals jointly written with Johannes Broedel (draft version of a proceedings article for the KMPB Conference “Elliptic Integrals, Elliptic Functions and Modular Forms in Quantum Field Theory”, DESY Zeuthen, Zeuthen, Germany, October 2017)
TEACHING
I am teaching a doublet of master courses on string theory from fall 2021 to spring 2022, the lecture notes including homework problems can be found in the following pdf.
Moreover, you can find the notes of Max Guillen's extra lectures on ‘‘Advanced Topics in String Theory’’ in the following pdf.