DIMENSIONAL CONTINUATION WITHOUT PERTURBATION THEORY

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Dimensional continuation without perturbation theory

A formula is proposed for continuing physical correlation functions to non-integer numbers of dimensions, expressing them as infinite weighted sums over the same correlation functions in arbitrary integer dimensions. The formula is motivated by studying the strong coupling expansion, but the end result makes no reference to any perturbation theory. It is shown that the formula leads to the corr...

متن کامل

Analytical continuation and resummed perturbation theory

A pattern of partial resummation of perturbation theory series inspired by analytical continuation is discussed for some physical observables. Talk given at QCD 97 Conference, Montpellier, France 4 – 9 July 1997

متن کامل

Perturbation theory without diagrams: the polaron case.

Higher-order perturbative calculations in quantum (field) theory suffer from the factorial increase of the number of individual diagrams. Here I describe an approach which evaluates the total contribution numerically for finite temperature from the cumulant expansion of the corresponding observable followed by an extrapolation to zero temperature. This method (originally proposed by Bogolyubov ...

متن کامل

Dimensional perturbation theory for Regge poles

We apply dimensional perturbation theory to the calculation of Regge pole positions, providing a systematic improvement to earlier analytic first-order results. We consider the orbital angular momentum l as a function of spatial dimension D for a given energy E , and expand l in inverse powers of k[(D21)/2. It is demonstrated for both bound and resonance states that the resulting perturbation s...

متن کامل

Perturbation theory in two-dimensional open string field theory.

In this paper we develop the covariant string field theory approach to open 2d strings. Upon constructing the vertices, we apply the formalism to calculate the lowest order contributions to the 4-and 5-point tachyon–tachyon tree amplitudes. Our results are shown to match the 'bulk' amplitude calculations of Bershadsky and Kutasov. In the present approach the pole structure of the amplitudes bec...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Modern Physics Letters A

سال: 1995

ISSN: 0217-7323,1793-6632

DOI: 10.1142/s0217732395001319